BuddyPress.org

If the db needs upgrading it will auto do so when you visit the admin backend of wpmu. I don’t know how other keep up to date but I have a local copy of the SVN image of bp, mu and bbpress. I also have a test server running locally and I update that manually from my SVN working copy of all three. I used to just work off the SVN image as my dev server but that got confusing for SVN and me.

When I’m ready I update the live server. I’m in the process of creating a dev server on the same box as the live server. I did run across this little thing and thought I might try it out: http://dentedreality.com.au/2008/12/managing-wordpress-with-subversion/