MTS release note

diff --git a/docs/release-notes/2021/major/performance.rst b/docs/release-notes/2021/major/performance.rst
index 85b08653c852b526852e9827ca3248e437134c25..9c499fde539986941fdef5dc8753941eea374fba 100644 (file)
--- a/docs/release-notes/2021/major/performance.rst
+++ b/docs/release-notes/2021/major/performance.rst
@@ -7,6 +7,13 @@ Performance improvements
    Also, please use the syntax :issue:`number` to reference issues on GitLab, without the
    a space between the colon and number!
 
+Added support for multiple time-stepping
+""""""""""""""""""""""""""""""""""""""""
+
+A two-level multiple time-stepping scheme has been implemented.
+Any combination of five different force groups can be selected
+to evaluate less frequently, thereby improving performance.
+
 Extend supported use-cases for GPU version of update and constraints
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