Recently we announced a preview of the next release which contains Docker Compose support and a couple updates to Service Fabric Explorer. The SDK for this preview release is now available on Web Platform Installer and NuGet.
We have also released a refresh for the 5.6/2.6 release that has a small set of bug fixes for a few pressing issues reported to us on GitHub around PowerShell commands that crashed in certain circumstances, and a bug that caused upgrades to require a manual machine reboot.
As always, check out the release notes for all the details.
Regarding the new version for Standalone, it will be released during the first week of June.
The Service Fabric Team