Update release.rst for 2.15.0 (#1378)

Author: sanketverma1704

docs/release.rst

@@ -15,9 +15,29 @@ Unreleased
     # .. warning::
     #    Pre-release! Use :command:`pip install --pre zarr` to evaluate this release.
 
+.. _release_2.15.0:
+
+2.15.0
+------
+
+Enhancements
+~~~~~~~~~~~~
+
 * Implement more extensive fallback of getitem/setitem for orthogonal indexing.
   By :user:`Andreas Albert <AndreasAlbertQC>` :issue:`1029`.
 
+Documentation
+~~~~~~~~~~~~~
+
+* Add API reference for V3 Implementation in the docs.
+  By :user:`Sanket Verma <MSanKeys963>` :issue:`1345`.
+
+Bug fixes
+~~~~~~~~~
+
+* Fix the conda-forge error. Read :issue:`1347` for detailed info.
+  By :user:`Josh Moore <joshmoore>` :issue:`1364` and :issue:`1367`.
+
 .. _release_2.14.2:
 
 2.14.2