Don't know if it's been posted before so apologies if you have it but it's a tool to keep up with the latest add-ons.
http://www.majorgeeks.com/WoWus_d5128.html
there are a few of these around now. I used to use wowace updater but have switched to wowmatrix http://www.wowmatrix.com/ as it handles a lot more addons.