diff --git a/relnotes/next b/relnotes/next
--- a/relnotes/next
+++ b/relnotes/next
@@ -21,6 +21,30 @@
    windows. See rust/README.rst in the mercurial repository for
    instructions to opt into this.
 
+ * An experimental config `rewrite.empty-successor` was introduced to control
+   what happens when rewrite operations result in empty changesets.
+
+
+== Bug Fixes ==
+
+ * For the case when connected to a TTY, stdout was fixed to be line-buffered
+   on Python 3 (where it was block-buffered before, causing the process to seem
+   hanging) and Windows on Python 2 (where it was unbuffered before).
+
+ * Subversion sources of the convert extension were fixed to work on Python 3.
+
+ * Subversion sources of the convert extension now interpret the encoding of
+   URLs like Subversion. Previously, there were situations where the convert
+   extension recognized a repository as present but Subversion did not, and
+   vice versa.
+
+ * The empty changeset check of in-memory rebases was fixed to match that of
+   normal rebases (and that of the commit command).
+
+ * The push command now checks the correct set of outgoing changesets for
+   obsolete and unstable changesets. Previously, it could happen that the check
+   prevented pushing changesets which were already on the server.
+
 
 == Backwards Compatibility Changes ==
 
@@ -33,6 +57,10 @@
    changed its default behavior. To get the previous behavior, run `hg perfwrite
    --nlines=100000 --nitems=1 --item='Testing write performance' --batch-line`.
 
+ * The absorb extension now preserves changesets with no file changes that can
+   be created by the commit command (those which change the branch name
+   compared to the parent and those closing a branch head).
+
 
 == Internal API Changes ==
 
@@ -45,3 +73,8 @@
    New accessors are provided to detect if any non-public changeset exists
    (`hasnonpublicphases`) and get the correponsponding root set
    (`nonpublicphaseroots`).
+
+ * The `stdin`, `stdout` and `stderr` attributes of the `mercurial.pycompat`
+   module were removed. Instead, the attributes of same name from the
+   `mercurial.utils.procutil` module should be used, which provide more
+   consistent behavior across Python versions and platforms.