they practically all do. It's just limited by the OS. If you have a 9550 with os .320 then home screen icons won't update. If you have the latest leak, it will update just fine.
Posted from my CrackBerry at wapforums.crackberry.com
Seeing as you are new I would highly recommend reading the BB101 Lecture Series, you can find it in the Help Tab. Lots of good info there. Also you may want to read the How Tos/ips threads in the Storm and Storm2 forums.