No news on what it did though, but I'm assuming it was this update:
Bethblog had the details on this late last week, and it looks promising for the PC version of Brink, with fixes to the server browser, the dedicated server, and some minor bugs. The weirdo sound bug on certain maps has been fixed, and also: “Graphical performance has been improved, especially when using Ambient Occlusion. We’ve worked closely with both AMD and NVIDIA, and you should see performance and stability improvements in future driver revisions from both parties.” No exact date yet, but it should be this week. I’ll make sure I schedule games on the servers when it’s all updated so we can take a look at the improvements.
EDIT: After playing for just a few minutes, seems that the game is running a bit smoother, server browser seems to be a bit different, only 80 or so servers were showing, as opposed to the usually over 600. Not sure if they auto hide empty/full servers or not. Didn't really care to find out.