diff --git a/ANNOUNCE.rst b/ANNOUNCE.rst
index f7871388..50bc15c1 100644
--- a/ANNOUNCE.rst
+++ b/ANNOUNCE.rst
@@ -12,7 +12,8 @@ Also, the `_xgetbv()` collision has been fixed (@mgorny).
 
 Last but not least, the chunk format has been fully described so
 that 3rd party software may come with a different implementation,
-but still compatible with C-Blosc chunks.
+but still compatible with C-Blosc chunks For details, see our new
+blog post: https://blosc.org/posts/beast-release/.
 
 Also, new versions for blosclz (2.3.0) codec has been backported from
 C-Blosc2.  Expect better compression ratios and performance.
diff --git a/RELEASE_NOTES.rst b/RELEASE_NOTES.rst
index b29369bb..09a50612 100644
--- a/RELEASE_NOTES.rst
+++ b/RELEASE_NOTES.rst
@@ -10,7 +10,8 @@ Changes from 1.19.1 to 1.20.0
   Nathan Moinvaziri (@nmoinvaz).
 
 * BloscLZ updated to 2.3.0.  Expect a important performance boost, and
-  specially better compression ratios.
+  specially better compression ratios.  For details, see our new blog
+  post: https://blosc.org/posts/beast-release/
 
 * Fixed the `_xgetbv()` collision. Thanks to Michał Górny (@mgorny).