Yesterday, we told everyone who was still rocking a jailbreak under iOS 4.3.3 (mainly iPad 2 users) to upgrade to the soon-to-be-jailbroken-for-A5-devices iOS 5.0.1 now, before Apple releases iOS 5.1, which closes the vulnerability. If you don’t, you might lose your chance for a jailbreak for good.
Here’s the caveat though. If you’re on an iPhone 4S and if you want to carrier unlock it down the line, don’t upgrade. iOS 5.0.1 has a different baseband than iOS 5, and while the Dev Team has an exploit for iOS 5 that they hope will lead to an unlock, they don’t know when or even if they’ll be able to crack open the later update.