D10497: relnode: document the move to `zstd` as default compression

[marmoute (Pierre-Yves David)]

marmoute created this revision.
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REPOSITORY
  rHG Mercurial

BRANCH
  default

REVISION DETAIL
  https://phab.mercurial-scm.org/D10497

AFFECTED FILES
  relnotes/next

CHANGE DETAILS

diff --git a/relnotes/next b/relnotes/next
--- a/relnotes/next
+++ b/relnotes/next
@@ -11,6 +11,16 @@
    for compression. The default is single threaded operation. Currently
    only supported for zstd.
 
+== Default Format Change ==
+
+These changes affects newly created repositories (or new clone) done with
+Mercurial 5.8.
+
+  * The `ZSTD` compression will now be used by default for new repositories
+    when available. This compression format was introduced in Mercurial 5.0,
+    released in May 2019. See `hg help config.format.revlog-compression` for
+    details.
+
 == New Experimental Features ==
 
  * There's a new `diff.merge` config option to show the changes



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