Changelog for 0.15.1 (#2968)

Summary:
Pull Request resolved: #2968

Changelog. We need to put out a new release due to D78560935 in order to put out a new Ax release.

Reviewed By: saitcakmak, SebastianAment

Differential Revision: D80088627

fbshipit-source-id: 315f1ced53b34694867a2b47c20b52503bdfe00b

Author: esantorella

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 The release log for BoTorch.
 
+## [0.15.1] -- Aug 12, 2025
+This is a compatibility release, coming only one week after 0.15.0.
+
+#### New features
+* Enable optimizing a sequence of acquisition functions in `optimize_acqf` (#2931).
+
 ## [0.15.0] -- Aug 5, 2025
 
 #### New Features