more changelog notes

Author: minrk

docs/source/changelog.rst

@@ -8,15 +8,22 @@ Changes in IPython Parallel
 7.0.0
 -----
 
-**prerelease** there are some big things coming! This is a first prerelease to get some things out there for testing
+**prerelease** there are some big things coming! This is currently a prerelease to get some things out there for testing
 
 - **Require Python 3.6**
 - Fix compatibility issues with ipykernel 6, jupyter-client 7
-- New prototype BroadcastScheduler with vastly improved scaling in 'do-on-all' operations,
-  c/o Tom-Olav Bøyum's Master's thesis.
+- New :class:`.Cluster` API for managing clusters from Python,
+  including support for signaling and restarting engines.
+- New prototype :class:`.BroadcastScheduler` with vastly improved scaling in 'do-on-all' operations
+  on large numbers of engines,
+  c/o Tom-Olav Bøyum's Master's thesis at University of Oslo.
+- New :meth:`.Client.wait_for_engines(n)` method to wait for engines to be available.
+- Nicer progress bars for interactive waits, such as :meth:`.AsyncResult.wait_interactive`.
 - Add :meth:`.AsyncResult.stream_output` context manager for streaming output.
   Stream output by default in parallel magics.
-- The repo has been updated to use pre-commit, black, myst, and friends and GitHub Actions for CI, but this should not affect users, only making it a bit nicer for contributors.
+
+
+The repo has been updated to use pre-commit, black, myst, and friends and GitHub Actions for CI, but this should not affect users, only making it a bit nicer for contributors.
 
 6.3.0
 -----