[winswitch] [ANNOUNCE] Xpra 6.4

[Antoine Martin]

Hi,

This new release is an exciting one, it contains many under-the-hood 
changes that let to tangible improvements, as well as some visual changes.

The most important changes started with the modularization work and 
ended with the removal of Gtk from the X11 seamless server.
This was not just about removing a thick and mostly unused dependency 
layer, this change allows us to run the seamless X11 server on MacOS and 
MS Windows platforms.
Now granted, there aren't many native X11 applications you can run on 
these platforms, but there is nothing preventing you from running the 
X11 applications in a container or VM.

This release is currently the only non-beta build that contains the 
updated libpng library which fixes some serious CVEs:
https://github.com/Xpra-org/xpra/issues/4722
Security conscious users should update as soon as possible, because one 
of these CVEs looks fairly easy to exploit.
A new LTS release will follow shortly to address this vulnerability.

There is now also a work-in-progress wayland seamless server, which 
should reach the point where it is actually usable for anything more 
fancy than a terminal in the near future.

For the full list of changes, see the v6.4 release notes:
https://github.com/Xpra-org/xpra/releases/tag/v6.4

Cheers,
Antoine