I would say to just play around with the device first to get somewhat familiar with it and it's basic functions before you go ahead and do advance stuff like update the OS right off the bat, IMO.
Posted from my CrackBerry at wapforums.crackberry.com
You don't NEED to update. In fact, the update was officially released Friday, then pulled Saturday. If you don't know how to update, I'd hold off on updating.