Updated wording

documentation/_resource/overrides/main.html

@@ -8,7 +8,7 @@
   <strong>not recommended for production environments</strong> yet. We encourage you to test it and give your feedback.
   This will help us improve the product and make it production-ready faster.
   <br>
-  We are working at providing the index encryption and WAL encryption for indexes. This functionality will be available in Percona Server for PostgreSQL 17. 
+  We are working at providing the index encryption and WAL encryption for indexes. This functionality will be available as part of `tde_heap` access method that will be released as the tech preview in Percona Server for PostgreSQL 17. 
   <br>
   Learn more about upcoming changes in the <a src="">Rocky road to an open source Transparent Data Encryption (TDE) for PostgreSQL</a> blog post.
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