This is OrcaSlicer V2.1.0 beta release.

What's Changed

Orca Slicer now features brand-new icons, thanks to @yw4z in #4368
These icons are designed to be more consistent, modern, and pixel-perfect, offering better color contrast. They align seamlessly with the new design of Orca Slicer. A big thanks to @yw4z for these new icons and numerous UI improvements!
Orca Slicer now support open/import model from Prinables.com/Thingiverse.com/makerworld.com directly by @SoftFever and @Ocraftyone (#5486, #5416, #3823)
No more manual downloads! You can now open models directly from these sites, and Orca Slicer will automatically import them for you.

You can enable this feature in the Preferences dialog.
Please note that this feature is currently available only for Windows.

Infill direction enhancements by @SoftFever in #5267
With the new enhancements, Orca Slicer now allows users to set sparse and solid infill directions independently. Users can also disable solid infill direction rotation, which is particularly useful when printing with transparent materials.

infill.direction.mp4
Port new sparse infill pattern Cross Hatch and optimization by @SoftFever in #5495

In this release, a new infill pattern called CrossHatch has been introduced into Orca(thanks to BambuStudio). This pattern is similar to Gyroid and the new 3D HoneyComb introduced in OrcaSlicer 2.0 RC but offers even faster printing speeds. Orca has further optimized this infill pattern to enhance its performance at low infill densities.

Before:

After:
improve seam performance by @SoftFever in #5436
Support larger printer by @SoftFever in #5320
Orca Slicer previousely only support printer bed sizes smaller than 2147mm x 2147mm due to the limitations of the 32-bit data type.
This limitation also applies to the maximum number of platers you can create for a project.
The total width/length of all the plates cannot exceed this limit.
Orca Slicer now support sizes as large as desired.
For convenience, the limit is currently set to 214m x 214m x 214m.
SuperSlicer is referenced for some changes.
ESP3D printer connection for wireless printing by @PreyK in #5399
Added ESP3D support for wireless printer connection to be able to send gcode & start printing directly from the slicer on printers with ESP3D module.
fix wrong overhang slowdown value by @SoftFever in #4940

Fixed a bug that overhang slowdown may slowdown too much in some cases.
before, it slowed down to 4 mm/s despite we had minimal speed to 10:

after:
SEMM: Introduced parameter to control the maximum speed used for purging in the purge tower by @igiannakas in #5304
Previousely the speed limit is set to 90mm/sec which works well; however speed gains can be made by increasing this if the printer is able to bridge at higher speeds in the wipe tower.
A max speed limit has been introduced for the purge tower. The existing, as is limits of volumetric flow for the filament and sparse infill speeds are respected. Same for the ramping up of purge speed up to the limit.
Adjustable infill wall overlap for top and bottom surfaces by @igiannakas in #4832
This new option allows for independent adjustment of the infill/wall overlap for internal solid and sparse infill and top and bottom surfaces.
Touchpad-friently 3d navigation by @buzzhuzz in #4598
Implement FreeCAD-inspired touchpad navigation mode.
This mode makes 3d model inspection easier for devices with touchpad as the only pointer device.
Controls:
Shift+move: panning
Alt+move: rotation

nav-touchpad2.mp4
Orca Slicer default parameter tweaks by @SoftFever in #5406
Some parameters are tweaked to improve the print quality and speed for all printers
Gap fill are now disabled by default
top_surface_pattern are not default to Monotonic Line
Sparse infill pattern are now default to Cross hatch
etc
Fixed a bug that top surface was mistaken as bridge in some cases by @SoftFever in #4678
Precise Z Height

When enabled, this option ensures the accurate Z height of the model after slicing, even if the model height is not a multiple of the layer height.
For example, slicing a 20mm x 20mm x 20.1mm cube with a layer height of 0.2mm would typically result in a final height of 20.2mm due to the layer height increments. By enabling this parameter, the layer height of the last five layers is adjusted so that the final sliced height matches the actual object height, resulting in an accurate 20.1mm (as shown in the picture). This feature is ported from BambuStudio.
Support Multi-device Management for Bambu printers(ported from BambuStudio)
Reducing purge through retracting filament for Bambu printers with AMS (port from BambuStudio)
Hide revert and delete preset buttons while search box focused by @yw4z in #5253
Removes check to disable nozzle override. by @anselor in #5459
Add z offset to pressure advance calibration (line and pattern) by @GrannyShifting in #4434
Lowering wipe tower margin by @vgdh in #4661
gui: reverse mouse zoom option (#4668) by @buzzhuzz in #4677
Fix go-to-layer dialog in gcode preview by @buzzhuzz in #4816
Add an option to allow user disable printer configuration by @SoftFever in #4930
Display filament labels in "change filament" context menus by @javawizard in #4921
Do layer height recognition on G3 moves as well by @Noisyfox in #4843
gui: fix zoom-to-mouse by @buzzhuzz in #4844
ENH: restore single instance by @noobydp in #4810
Reload All and Project Path by @chshkhr in #4903
Fix wipe tower not showing purged filament volume for non BBL SEMM by @igiannakas in #5223
Fix bed mesh algorithm for 3 point bicubic algorightm by @igiannakas in #5296
Close Variable layer height gizmo when other toolbar buttons clicked by @yw4z in #5255
Spanish translation fixes and improves by @tadeu2 in #4826
Russian translation update by @AndylgTom in #4782
Create pull_request_template.md by @SoftFever in #4856
Fix model load in debug build by @buzzhuzz in #4656
Fix segmentation fault when running CLI by @asokawotulo in #4702
Update Polish translation by @KrisMorr in #4799
fix typo and new features in DE language file by @hliebscher in #4881
MagicMaker Apply to join by @magicmaker3 in #4895
Add Kingroon KP3S 3.0 by @vgdh in #4902
Update OrcaSlicer_tr.po - TURKISH translation update by @olcayoren in #4847
Update OrcaSlicer_de.po by @Scootworks in #4909
QOL improvments to Ender 3 V3 KE G-Code by @cochcoder in #4675
fix processes for Creality Ender3V3SE 0.4 nozzle by @sizzname in #4785
Series of fixes for the Creality Ender 3 V3 SE by @buzzhuzz in #4813
Flashforge Adventurer profile enhancements by @RikshaDriver in #4824
Small change on Toolbar order by @yw4z in #4581
rework of Linux build scripts by @jamincollins in #4850
Avoid M74 on Prusa MK4 in spiral vase mode by @rcloran in #4959
Rename tab_auxiliary_avtice.svg to tab_auxiliary_active.svg by @discip in #4390
kor translation update by @crwusiz in #4970
Russian translation update by @AndylgTom in #4981
Merge some changes from BS 1.9 by @SoftFever in #4994
Turkish words were edited by @olcayoren in #5004
0409 AD5M and G3U update by @FlashforgeOfficial in #4936
new de feature translation for dev after merge mit bs 1.9 by @hliebscher in #5021
Update QIDI profiles by @HYzd766 in #5017
Fr translations by @bistory in #5018
fixed an issue that translate object was not wrong by @SoftFever in #5005
correct typo: transver vs transfer by @jamincollins in #4957
Initial add of Creality Sermoon V1 Printer and 3 process configs by @Stevetm2 in #4956
Act adjustments by @jamincollins in #4961
Edited into Turkish words. by @olcayoren in #5032
Polish translation update after merge by @KrisMorr in #5038
Adding units [mm] for filter_out_gap_fill in PrintConfig.cpp by @gerchowl in #4915
Fix translations and typos by @hliebscher in #5039
Initial Add of Brazilian Portuguese translation by @DvoraGames in #5043
Fixed an regression bug where the sidebar would not appear when Orca Slicer was opened by double-clicking a model file. by @SoftFever in #5089
show splash screen on Linux by @jamincollins in #5050
Add missing "Edit SVG" item for Add/Negative/Modifier SVG objects in object list by @yw4z in #5076
Qidi profile updates by @HYzd766 in #5071
Added Adventurer 5M series 0.25 & 0.8 mm nozzles + consolidation/cleanup by @RikshaDriver in #5041
Creality K1 series improvements by @bistory in #5081
Fixed a crash when arrange plate by @SoftFever in #5109
Fix crash when changing type of SVG / TEXT modifier by @yw4z in #5070
Fix Dark Mode issues on Linux(via LAB) by @jamincollins in #5044
Prusa Mini with Input Shaper Profiles by @koppensb in #5116
Fix a regression that post process run twice when uploading to printer by @SoftFever in #5101
Construct 1 Print profile update: Z-Jerk optimisation & Thumbnail QOI Fix by @Construct3D-AM in #5161
Merge some features from BS1.9 beta4 by @SoftFever in #5181
Use wxwidgets fork instead of patch by @SoftFever in #5184
Ender 3 V3 initial commit by @bistory in #5127
Fix invalid nozzle_type undefined for 'Anycubic Kobra 2 0.4 nozzle' system machine by @krissrex in #5159
Polish translation update after merging with BS_Beta4 by @KrisMorr in #5189
Adjusted start g-code for Qidi X-Max/X-Plus 1 and 2. by @Fredrik81 in #5108
Fixup docker build/run by @c-jason-kim in #5139
Tab improvements by @yw4z in #5210
Ender3 v3 maximum jerk fix by @bistory in #5211
kor translation update by @crwusiz in #5213
Polish translation update by @KrisMorr in #5215
Update OrcaSlicer_tr.po - TURKISH translation update by @olcayoren in #5227
Fix measure gizmo "Copy to Clipboard" button icon for dark mode by @yw4z in #5230
Update Qidi Q1 Pro 0.4 nozzle.json by @HYzd766 in #5234
Update OrcaSlicer_tr.po by @olcayoren in #5238
add new german translations by @hliebscher in #5247
Fixes 5030: fix segfault by @jamincollins in #5075
Fix plate list rendering by @Noisyfox in #5263
Color fixes by @yw4z in #5239
Add a description for Stealth Mode by @cochcoder in #5281
Creality Sermoon V1 - added generic filaments and machine settings by @Stevetm2 in #5301
disable eigen for OpenCV by @SoftFever in #5311
Prusa MINIIS Profiles, changed to Pressure Advance UI settings, better processes for different nozzle sizes by @koppensb in #5244
update snapmaker profiles by @macdylan in #5300
Fix Rectilinear sparse infill by @kisslorand in #5308
Add "Add Models" to plate and background context menu by @yw4z in #5319
QoL: Add option to not show non-utf8 step warn by @Noisyfox in #5327
fix parameters in process by @FlyingbearOfficial in #5331
RatRig machines which use Klipper don't use M601 but "PAUSE" for paus… by @valentt in #5335
e3v3se profile updates by @buzzhuzz in #5339
Creality Sermoon V1 Profies 0.16 and 0.28 - Reduced max speed to 195mm/s by @Stevetm2 in #5385
Disabled arc fitting for Qidi X3/Q1 series by @bistory in #5368
Disabled Arc fitting for all Creality models that had it enabled by @bistory in #5367
gui: improve RichMessageDialog by @buzzhuzz in #5371
Updated arc fitting pop up to clarify that this option should not be enabled for Klipper machines by @igiannakas in #5352
Polish translation + list.txt update by @KrisMorr in #5378
Best effort for pixel perfect icon rendering by @Noisyfox in #4552
Add spacing between icons of objects list item if it has multiple icons by @yw4z in #5321
Add Dremel 3D20, 3D40, and 3D45 by @cochcoder in #4777
Feature/merge bs1.91 by @SoftFever in #5394
Fr translation by @bistory in #5398
Added a deactivate() function to Tab so when switching tabs it hides … by @akoolenbourke in #5386
Improve gcode preview navigation by @buzzhuzz in #5326
Fix parameters not updating on non active tabs by @yw4z in #5400
Implemented minimum skirt extrusion length and draft shield parameter by @igiannakas in #5356
fix_c-format->>-no-c-format by @KrisMorr in #5403
Fixes for new icons by @yw4z in #5221
Update locale + fix by @KrisMorr in #5413
ENH: Open Prinables.com Links and Zip Archives by @Ocraftyone in #3823
SEMM: wipe tower sparse infill speed adjustment by @igiannakas in #5415
fix new locale de by @hliebscher in #5407
General fixes and improvements to CR-10 SE, Ender-3 V3 KE, Ender-3 S1 Plus, & small fix for Ender-3 V3 SE by @cochcoder in #4793
Fixed not get port when obtaining the host. by @StimeKe in #5423
Reworked splash screen by @yw4z in #5257
Update Polish translation + fix strings for gettext by @KrisMorr in #5427
Fix edit button of printer combo box not updates its color after theme switch by @yw4z in #5412
Catalan language updated by @davidjuanesb in #5440
Updated FR translations by @bistory in #5439
fix slow_down_layers by @buzzhuzz in #5396
feat: add model_name and plate_number placeholders by @Deadleg in #5401
Ender 3 V3 Plus profile by @bistory in #5447
Flatpak build by @powpingdone in #4175
Update OrcaSlicer_tr.po - TURKISH translation update by @olcayoren in #5451
Fixed default profiles for Ender 3 V3 by @bistory in #5452
add new german translations by @hliebscher in #5453
Flsun Super Racer (SR) Profile by @bistory in #5454
Update OrcaSlicer_pt_BR.po by @DvoraGames in #5460
Added additional filament vendors. by @anselor in #5461
Turkish words were edited in the text.js file. by @olcayoren in #5473
Add puase G-Code for FLSUN V400 by @cochcoder in #5469
Fix potential typo with print infill first tooltip by @cochcoder in #5476
Updated string after merged #5459 by @KrisMorr in #5479
Add Flashforge guider 2s by @cochcoder in #5165
Flsun SR : Fine tuning of speeds and accelerations by @bistory in #5483
Add filament vendors (CERPRiSE, FilamentOne, Tianse, and VOXELPLA) & rename Formfortura to Formfutura by @cochcoder in #5472
Update Polish translation for new features by @KrisMorr in #5487
Added new French translations by @bistory in #5492
Parameter box improvements by @yw4z in #5119
Chamber Change by @HYzd766 in #5500
Update OrcaSlicer_uk.po by @Gudzonskiy in #5503