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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>R Developer Page</title>
</head>
<body bgcolor="#FFFFFF">
<h1 align=center>
R Developer Page</h1>
<i>This site is intended as an intermediate repository for more or
less finalized ideas and plans for the R statistical system. Most
parts of the site are open to the public, and we welcome discussions
on the ideas, but please do not take them for more than that, in
particular there is no commitment to actually carry out the plans in
finite time unless expressedly stated.</i>
<p>The site also includes <a href="TechDocs">a collection of technical
papers about R</a> and the <a href="https://blog.r-project.org">R Blog</a>
(originally at <a href="Blog/public"><tt>Blog/public</tt></a>).
<p>For general information about R see the <a
href="https://www.R-project.org">R Project's homepage</a>.
<p> This page (and most of its links) are updated hourly and so may not
be absolutely current. The up-to-the-minute version can be seen at
<a href="https://svn.r-project.org/R-dev-web/trunk/index.html">
https://svn.r-project.org/R-dev-web/trunk/index.html</a>.
<!-- Search Google -- the code below is BROKEN as of 2020; disabled
since it results in "not secure" classification in Chrome (SU)
<center>
<FORM method=GET action=https://www.google.com/u/rproject>
<TABLE bgcolor=#FFFFFF cellspacing=0 border=0><tr valign=middle><td>
<A HREF=http://www.google.com/>
<IMG SRC="http://www.google.com/logos/Logo_40wht.gif" border=0
ALT=Google></A>
</td>
<td>
<INPUT TYPE=text name=q size=31 maxlength=255 value="">
<INPUT type=submit name=sa VALUE="Search this site">
</td></tr></TABLE>
</FORM>
</center>
-- Search Google -->
<!-- update this *and* ../R-project-web/trunk/md/index.md at each release ! -->
<h1>Release plans</h1>
Version 4.4.3 ("Trophy Case") was released on 2025-02-28.
<p>
The wrap-up release of the R-4.3.x series was 4.3.3 ("Angel Food Cake") on 2024-02-29.
<p>The release of 4.5.0 ("How About a Twenty-Six") is
scheduled for Friday 2025-04-11. Prerelease
source tarballs (and binaries for some platforms) are being made
available during the 4 weeks until the release.
<p>The schedule for 4.5.0 is as follows
<ul>
<li>Tuesday 2025-03-11: <i>START</i>
<li>Friday 2025-03-14: <i>GRAND-FEATURE FREEZE</i> (4.5.0 alpha) </li>
<li>Friday 2025-03-28: <i>FEATURE FREEZE</i> (4.5.0 beta) </li>
<li>Friday 2025-04-04: <i>CODE FREEZE</i> (4.5.0 RC) </li>
<li>Tuesday 2025-04-08: <i>PRERELEASE</i></li>
<li>Friday 2025-04-11: <i>RELEASE</i> (4.5.0) </li>
</ul>
<p>The overall release schedule is to have annual x.y.0 releases in
Spring, with patch releases happening on an as-needed basis. It is
intended to have a final patch release of the previous version shortly
before the next x.y.0 release.
<h3>Pointers</h3>
<ul>
<li>
The latest <a href="http://stat.ethz.ch/R-manual/R-devel/doc/html/NEWS.html">NEWS</a>
file, which has a section for the current development version of R,
and below that for the patches in the current R-patched (part of the
previous series).
</li>
<li>
<a href="RSSfeeds.html">RSS feeds based on changes to the NEWS file.</a>
</li>
<li>
<a href="http://developer.R-project.org/R_svnlog_2017">Subversion log
from the start of 2017 to today</a>.<br>
This log is only updated daily. To get absolutely
current information, use Subversion, e.g. for all changes in the last
week,
<pre>
svn log -v -r HEAD:\{`date +%Y-%m-%d -d'7 days ago'`\} https://svn.r-project.org/R
</pre>
For older logs in text format, try changing the filename, e.g. to "R_svnlog_2016".
</li>
<li>Updating packages for changes in R</li>
<ul>
<li><a href="30update.txt">R 3.0.0</a></li>
</ul>
</li>
<li>
Package check summaries:
<ul>
<li><a href="http://cran.r-project.org/web/checks/check_summary.html">CRAN</a>
<li><a
href="http://www.bioconductor.org/checkResults/checkResults.html">Bioconductor</a>
</ul>
</li>
<li> Building and checking R source packages for Windows: <a
href="http://win-builder.r-project.org/">http://win-builder.r-project.org/</a>
</li>
<li>
<a href=SVNtips.html>Subversion tips -- notably for R-core</a></li>
<li>
<a href=devel-guidelines.txt>Development guidelines</a></li>
<li>
TODO lists
<ul>
<li><a href="WindowsTODO.html">Windows</a> version of R.
<li><a href="tcltkTODO.html">tcltk</a> package.
<li><a href="BDR-TODO.html">List</a> from Brian Ripley.
<li><a href="TODO-KH">List</a> from Kurt Hornik.
<li><a href="TODO-MM.html">List</a> from Martin Mächler.
<li><a href="http://www.stat.auckland.ac.nz/~paul/R/paul-todo.html">List</a> from Paul Murrell.
<li><a href="TODO-DTL.html">List</a> from Duncan Temple Lang.
</ul>
</li>
<li>RFCs and writeups
<ul>
<li>A redesign of
<a href="http://www.stat.auckland.ac.nz/~paul/R/customGridRedesign.pdf">how
to customise a grob</a> in 'grid'.
</li>
<li> Guidelines for <a href=Rds.html><samp>*.Rd</samp></a> files. </li>
<li><a href="Translations30.html">Translating R Messages</a>: notes for
translation teams.
<li><a href="TranslationTeams.html">List of translation teams</a>: contact
these people if you want to help with translations, or contact
R-core if you want to add your language to the list.
</li>
<li><a href="Portability.html">Resources for portable programming</a>.
<li> <a href="valgrind-internal.html">Using Valgrind on the R memory manager<a>
<li> <a href="memory-profiling.html">Memory profiling<a> </li>
<li> <a href="howMethodsWork.pdf">How S4 Methods Work<a> by John Chambers
(on how S4 method dispatch has been working since R version 2.4.0).</li>
<li>A brief description of new <a href="Raster/raster-RFC.html">
support for raster images in the graphics engine</a>.
<li> An RFC on a proposal to <a href="sRGB-RFC.html">make sRGB the
internal colorspace</a> for R graphics.</li>
<li> A <a href="parseRd.pdf">description</a> of the parse_Rd() parser for Rd files. This
document also includes a draft description of the new facility for executing R code
within Rd man pages.
<li>How to write <a href="model-fitting-functions.html">model-fitting</a>
functions in R, and especially on how to enable all the safety features.
</li>
<li>A list of things to consider for a possible <a
href="new-homepage.html" >re-design of the R homepage.</a>
<li>A brief writeup on <a href="rtags.html">how to tag R
source files</a> for use with Emacs.
<li> Some <a href="Refcnt.html">notes</a> on reference counting.
</ul>
</li>
<li>
Copy of the <tt>noweb</tt> sources <a href =
"noweb-2.11b.tgz">here</a>, needed for configuring R in maintainer
mode.
</li>
</ul>
<h3>Older Material</h3>
Material in this section is at least 6 months' old, and may or may not
still be relevant. In particular, some of the proposals here have
been implemented in slightly different ways, or since been extended.
<ul>
<li>
Subversion/CVS logs for
<a href="R_svnlog_2012">2012</a>,
<a href="R_svnlog_2011">2011</a>,
<a href="R_svnlog_2010">2010</a>,
<a href="R_svnlog_2009">2009</a>,
<a href="R_svnlog_2008">2008</a>,
<a href="R_svnlog_2007">2007</a>,
<a href="R_svnlog_2006">2006</a>,
<a href="R_svnlog_2005">2005</a>,
<a href="R_svnlog_2004">2004</a> and
<a href="R_svnlog_2003">2003</a></li>
<li>Updating packages for changes in R</li>
<ul>
<li><a href="212update.txt">R 2.12.x</a></li>
<li><a href="270update.txt">R 2.7.x</a></li>
<li><a href="210update.txt">R 2.1.x</a></li>
<li><a href="200update.txt">R 2.0.x</a></li>
<li><a href="190update.txt">R 1.9.x</a></li>
<li><a href="180update.txt">R 1.8.x</a></li>
<li><a href="170update.txt">R 1.7.x</a></li>
<li><a href="160update.txt">R 1.6.x</a></li>
<li><a href="150update.txt">R 1.5.x</a></li>
</ul>
<li>
Notes on <a href="Encodings_and_R.html">Encodings and R</a>,
including the current implementation planned for 2.1.0.
</li>
<li>
<a href=bugs-collection>Open bugs in the repository</a> (original
correspondence truncated to 500 lines per message). No longer updated.</li>
<li><a href=CVStips.html>CVS tips</a></li>
<li>
RFCs and writeups</li>
<ul>
<li>
RFC on <a href="./Sparse.html">Sparse matrices in R</a>
</li>
<li>
<a href="embedded.html">An embeddable R library</a>
</li>
<li>
Some early notes on <a
href="http://www.stat.uiowa.edu/~luke/R/namespaces.html">name
spaces</a>, and the <a
href="http://www.stat.uiowa.edu/~luke/R/namespaces/morenames.html">name
space implementation for R 1.7</a> (also <a
href="http://www.stat.uiowa.edu/~luke/R/namespaces/morenames.pdf">available
in pdf format</a>).
</li>
<li>
Some notes on <a
href="http://www.stat.uiowa.edu/~luke/R/references.html">references,
external objects, or mutable state</a> for R and a <a
href="http://www.stat.uiowa.edu/~luke/R/simpleref.html"> simple
implementation</a> of external references and finalization added
to 1.2. A <a
href="http://www.stat.uiowa.edu/~luke/R/regexp.html">simple regular
expression package</a> provides an example of using this facility.
</li>
<li>
An outline of a preliminary weak reference mechanism is <a
href="http://www.stat.uiowa.edu/~luke/R/references/weakfinex.html">available</a>.
Details are likely to change after more experience is gained with
this in some internal uses.
</li>
<li>
Some notes on the <a
href="http://www.stat.uiowa.edu/~luke/R/gengcnotes.html">generational
collector</a> and its <a
href="http://www.stat.uiowa.edu/~luke/R/barrier.html">write
barrier</a>
</li>
<li>
Some <em>very</em> preliminary notes on <a
href="http://www.stat.uiowa.edu/~luke/R/bytecode.html">byte code
compilation</a> for R
<li>
Luke's <a
href="http://www.stat.uiowa.edu/~luke/R/thrgui/thrgui.pdf">notes on
threading, GUI, and asynchronous IO issues</a>. Some of the
reference links are messed up; the full references are in the <a
href="http://www.stat.uiowa.edu/~luke/R/thrgui/thrgui.bib">BibTeX
file</a>. Duncan also has <a href="RThreads/index.html">a set of
notes on threading</a>.
</li>
<li> A <a
href="http://www.stat.uiowa.edu/~luke/R/tcltk/ipctcltk.tar.gz">simple
alternate experimental implementation of tcltk</a> as a proof of
concept for an approach that uses a separate GUI server process
with inter-process message passing (which may be easier to get to
work across UNIX/Windows/MacOS).
</li>
<li> A <a
href="http://www.stat.uiowa.edu/~luke/R/exceptions/simpcond.html">
preliminary experimental implementation</a> of exception handling
for R. Also a <a
href="http://www.stat.uiowa.edu/~luke/R/exceptions/dynvars.html">simple
mechanism</a> for managing dynamic state.
</li>
<li> Some <a href="Install.html">notes</a> on possible enhancements to
the package installation procedure.
<li>
A <a href="http://cm.bell-labs.com/stat/duncan/DynamicCSymbols.ps">description</a>
of a new way of resolving C and Fortran routines
in <code>.C</code>, <code>.Call</code> and <code>.Fortran</code> calls.
</li>
<li>
<a
href="http://cm.bell-labs.com/stat/duncan/SCConverters/CObjectConversion.pdf">Notes</a>
and <a
href="http://cm.bell-labs.com/stat/duncan/SCConverters/SCConverters_1.0-0.tar.gz">example package</a>
of the new, extensible mechanism for converting arguments in
<code>.C()</code> calls.
</li>
<li> Developers notes on the
<a
href="methodsPackage.html">methods and classes</a>
package. Related pages discuss <a
href="classIssues.html">compatibility issues</a> for formal vs
old-style classes and methods, and other <a
href="moreClassMethodIssues.html">questions of strategy</a> for
future work, including areas where we are
beginning to extend the API in <i>Programming with Data</i>.
</li>
<li>
<a
href="NotesOnGet.html">Notes</a>
on some recent changes to functions <code>get</code>,
<code>assign</code>, and their relatives, to allow consistent use
of environments and other cleanups.
</li>
<li>
<a href="dataedit.txt"> Dataeditor restructuring ideas (outdated)</a></li>
<li>
<a href="TclTk.txt"> Thoughts on embedding Tk in R (outdated)</a></li>
<li>
<a href="equalAssign.html"> Notes on the <code>=</code> operator in assignments.</a></li>
<li> <a href="http://www.stat.uiowa.edu/~luke/R/serialize/serialize.html">
Some notes</a> on a new save/load format and a serialization
mechanism for R.
</li>
<li>
An RFC on
<a href="http://www.stat.auckland.ac.nz/~paul/R/basegraph.html">
changes to R base graphics and the graphics device drivers</a>.
</li>
<li>
<a href="TaskHandlers.pdf">Notes and Examples</a>
on callbacks that are invoked at the end of each
successfully completed top-level expression.
</li>
<li>
A document-in-progress describing the
<a href=http://www.stat.auckland.ac.nz/~paul/R/graphicsChanges.html>
changes to the graphics system
from 1.3.1 to 1.4.0</a>
</li>
<li>
A proposal for <a href=http://www.stat.auckland.ac.nz/~paul/R/fonts.html>
changing the specification of fonts in R</a> and
another one extending the discussion to
<a href=http://www.stat.auckland.ac.nz/~paul/R/gpars.html>line end/joins
and alpha transparency</a> specifications in R.
</li>
<li>
A <a href=http://www.stat.auckland.ac.nz/~paul/R/devices.html>
list of R devices</a>, including device maintainers and pointers to
where the code resides.
<li>
A package that provides a
<a href=http://www.stat.auckland.ac.nz/~paul/R/devNull_0.1.tar.gz>
null graphics device</a>; includes a vignette, "devNull", that
documents how to create a new graphics device as an add on package.
<li> Description of the <a href="nonstandard-eval.pdf">nonstandard
evaluation rules</a> in R 1.5.1 and some
suggestions. (updated). Also an <a href="onemodelframe.R">R
function</a> and <a href="formulasFrame.Rd">docn</a> for making model
frames from multiple formulas.
</li>
</ul>
<li> the <a href=ideas.txt> Ideas List </a></li>
<li>
<a href="db/index.html">R and databases area</a></li>
</ul>
<h3>Material mainly for the core team</h3>
The core team can access the source files for this site by
<pre>
svn checkout https://svn.r-project.org/R-dev-web/trunk R-dev-web
</pre>
Any commit to this area will be reflected in the web pages at the next
(daily) update. The current version can be seen at
<a href=" https://svn.r-project.org/R-dev-web/trunk/index.html">
https://svn.r-project.org/R-dev-web/trunk/index.html</a>.
<ul>
<!-- Outdated:
<li>
<a href=http://bugs.r-project.org/cgi-bin/R.private>Administrative
interface to bug repository</a> (UID/passwd available from pd)
</li>
-->
<li>Texts to use when entering R into software
archives such as <a href="http://freshmeat.net">freshmeat</a>:
<ul>
<li><a href="R-description-short.txt">short</a>
<li>long
<li><a href="www.gnu.org/R.html">R page at gnu.org</a>
<li><a href="R-release-1.0.0.txt">Release statement for 1.0.0 </a>
</ul>
</li>
<li>Release management details:
<ul>
<li><a href=release-checklist.html>Release procedures and checklist</a></li>
<li><a href=R-build-dist>Script for building R releases</a></li>
<li><a href=R-build-prerelease>Script for building prereleases
(alpha/beta/RC)</a></li>
<li><a href=R-set-version>Script for setting and committing the
VERSION file</a></li>
<li><a href=R-create-branch>Script for setting up the branches
at start of release procedures</a></li>
<li><a href=R-crontab.sample>Sample crontab (for 2.11.0)</a></li>
<li><a href=release-letter.txt>Release letter skeleton</a></li>
</ul>
</li>
<li><a href="gpgKeys.txt">Setting up and signing GPG keys</a></li>
<li><a href="Brochures">Advertising material</a></li>
<li>The <a href="Logo">R Logo</a> in several resolutions.</li>
<li><a href="modify-homepage.html">HOWTO modify www.R-project.org</a>.</li>
</ul>
</body>
</html>