A couple of quick updates for those still waiting on Apple A5 device jailbreaks -- namely iPhone 4S and iPad 2 -- as well as an iOS 5.1 jailbreak.
For iPhone 4S and iPad 2 devices, @pod2g just tweeted the following:
made a step today for the A5. With some luck we could expect a release in a week.
As to iOS 5.1, @i0n1c seems to have something in the pipeline, so 2012 could get off to a strong start for team Jailbreak.