update CHANGES

docs/changes.rst

@@ -246,6 +246,9 @@ things can be recommended:
   in your repo caused by a borg 1.1 bug
 - run `borg check` again (now with borg 1.2.x) and check if there is anything
   special.
+- run `borg info` (with borg 1.2.x) to build the local pre12-meta cache (can
+  take significant time, but after that it will be fast) - for more details
+  see below.
 - check the compatibility notes (see below) and adapt your scripts, if needed.
 - if you run into any issues, please check the github issue tracker before
   posting new issues there or elsewhere.
@@ -293,6 +296,32 @@ Compatibility notes:
   if you have scripts expecting rc == 2 for a signal exit, you need to update
   them to check for >= 128.
 
+Fixes:
+
+- diff: reduce memory consumption, fix is_hardlink_master, #6295
+- compact: fix / improve freeable / freed space log output
+
+  - derive really freed space from quota use before/after, #5679
+  - do not say "freeable", but "maybe freeable" (based on hint, unsure)
+
+Other changes:
+
+- info: use a pre12-meta cache to accelerate stats for borg < 1.2 archives.
+  the first time borg info is invoked on a borg 1.1 repo, it can take a
+  rather long time computing and caching some stats values for 1.1 archives,
+  which borg 1.2 archives have in their archive metadata structure.
+  be patient, esp. if you have lots of old archives.
+  following invocations are much faster due to the cache.
+  related change: add archive name to calc_stats progress display.
+- docs:
+
+  - add borg 1.2 upgrade notes, #6217
+  - link to borg placeholders and borg patterns help
+  - init: explain the encryption modes better
+  - clarify usage of patternfile roots
+  - put import-tar docs into same file as export-tar docs
+
+
 Version 1.2.0rc1 (2022-02-05)
 -----------------------------