add to what's new page

asdf-format · Nov 8, 2024 · 787cd55 · 787cd55
1 parent e69a705
commit 787cd55
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/docs/asdf/whats_new.rst b/docs/asdf/whats_new.rst
@@ -46,6 +46,13 @@ Removed API
 New Defaults
 ------------
 
+File I/O
+^^^^^^^^
+
+- calls to ``asdf.open()`` and ``AsdfFile()`` do NOT memory-map the
+  underlying arrays by default; the relevant parameter defaults to
+  ``memmap=False``
+
 .. _whats_new_4.0.0_validation:
 
 Validation