Plone 5.2.8 has been soft-released. Please give it a try and let me know if there are any critical issues. https://dist.plone.org/release/5.2-dev/versions.cfg
For those who haven't run across soft-releases before, this is the last step before the final release. Because things haven't been finalized yet, some packages may change between now and the release. It is not recommended to use soft-releases in production.
See also the release checklist on GitHub.
Interesting changes since 5.2.7:
Zope: Enhance cookie support. For details, see issue 1010
For more changes see Change log — Zope documentation 4.6 documentation
waitressis updated to version 2.1.1 to mitigate a vulnerability in that package. As waitress no longer supports Python versions less than 3.7 it is not advised to run Plone 5.2 on Python 2.7 or 3.6 any longer, even though they are still supported by Plone itself. You get an older
waitressversion then. If you must use an old Python version, please switch to a different WSGI server. See the recommendations in the Zope documentation.
plone.app.linkintegrity: Track link integrity of referenced PDFs and other site objects in IFRAME SRC references.
plone.outputfilters: Resolve UIDs in SRC attribute of of SOURCE and IFRAME elements.
plone.app.querystring: Add lazy attribute to vocabularies to prevent fetching any results.
plone.schema: Use indent in json.dumps to make JSON readable in the widget.
For a more complete list of changes, see the changelog.