According to a tweet posted by @MuscleNerd, a member of the iPhone Dev-Team, which has authored many jailbreak-related tools and tutorials, iOS 5's new automatic over-the-air updates shouldn't make jailbreaking harder.
Since the day jailbreaking has been legalized in US, things haven't really changed much. Legalization did provide the jailbreakers and those with jaibroken phones a reason to exuberate but that's pretty much the only thing they have gotten.
With Chronic Dev Team releasing GreenPois0n RC5 yesterday much was made of the inclusion of the option to add a custom animated boot logo. That's all well and dandy, other than the fact it doesn't entirely work.
Adding a spot of color to an otherwise sparse iPhone home screen is one of the main reasons to jailbreak an iDevice these days, and until today finding the right theme has been a chore. That's where Cydia's new Theme Center comes in.