WordPress-MU 2.7.1 was released last week. The release included a number of tweaks to the back end – including the removal of the admin bar, and some changes to the Plugins system.
The ability to activate plugins on a sitewide basis is nice, but I won’t be getting rid of Plugin Commander just yet.
There are some other back-end tweaks to set the dashboard for users who don’t have blogs, and to make things easier for users who have multiple blogs.
I upgraded SlayerCafe using the upgrade link in the admin panel, and things went fairly smoothly, although I did have some problems with plugins in the mu-plugins folder. I’m not sure if that’s something to do with my configuration, or with WordPress-MU itself, so if you’re thinking of updating, it’s a good idea to make a backup first!