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Co-authored-by: Graham Christensen <graham@grahamc.com>

Author: cole-h

doc/manual/source/release-notes-determinate/v3.16.0.md

@@ -1,6 +1,6 @@
 # Release 3.16.0 (2026-02-12)
 
-* Based on [upstream Nix 2.33.2](../release-notes/rl-2.33.md).
+* Based on [upstream Nix 2.33.3](../release-notes/rl-2.33.md).
 
 ## Support `.gitattributes` in subdirectories
 
@@ -17,7 +17,7 @@ This should now be fixed.
 
 PR: [DeterminateSystems/nix-src#327](https://github.com/DeterminateSystems/nix-src/pull/327)
 
-## `builtins.getFlake` fixes
+## `builtins.getFlake` now supports relative paths
 
 `builtins.getFlake` now supports using relative paths, like:
 
@@ -37,7 +37,7 @@ PRs:
 * [DeterminateSystems/nix-src#337](https://github.com/DeterminateSystems/nix-src/pull/337)
 * [DeterminateSystems/nix-src#338](https://github.com/DeterminateSystems/nix-src/pull/338)
 
-## Increase open file limit
+## Fixed a bug with too many open files
 
 Recently, some users have reported seeing errors like: