diff --git a/changelog.d/17676.misc b/changelog.d/17676.misc
new file mode 100644
index 0000000000..756918e2b2
--- /dev/null
+++ b/changelog.d/17676.misc
@@ -0,0 +1 @@
+Pre-populate room data used in experimental [MSC3575](https://github.com/matrix-org/matrix-spec-proposals/pull/3575) Sliding Sync `/sync` endpoint for quick filtering/sorting.