Update source/developer/aarch64.rst

Co-authored-by: Martin Grigorov <martin-g@users.noreply.github.com>

source/developer/aarch64.rst

@@ -7,7 +7,7 @@
 While we do not yet have builds for ``osx-arm64`` (see
 :ref:`platform-nomenclature-faq`), we are starting to roll out
 ``linux-aarch64`` builds. These run on CircleCI, which offers the
-infrastructure for this (in contrast to GitHub Actions).
+infrastructure for this (in contrast to GitHub Actions, which does not support Linux ARM64 at the moment (Nov 2023)).
 
 This is being initially approached as an opt-in process as we make sure
 all the moving parts are working correctly. A recipe can be flagged for