SVN is just sub-version integration?
Not really integration at this point, but BRL has been running an SVN repository where you can sync up and get the latest and greatest work-in-progress updates, a bit like SyncMods used to do. (Syncmods itself has been discontinued)
You'll need to get a 3rd party SVN client to be able to download them, but there's a number of freebies available.
(I myself use Tortoise-SVN for the GUI integration, as well as SlikSVN for a command-line utulities, so I can just double-click a batch file that updates everything)
Since they just spread the source over SVN and not the precompiled binaries for all platforms, you'll also need to have MinGW installed to be able to use it.
There are also some nice other SVN repositories out there, such as Brucey's wxMax and his other millions of mods.
- Is Max growing or shrinking?
The prouct itself is getting more and more capable as time goes on thanks to the ongoing development of new features such as the all-important threading module, plus the ever increasing number of 3rd party modules.
Posting-wise the forums definitely appear to be leaning towards BlitzMax instead of the old B3D.