During this night the Chronic Dev Team updated Rocky Raccoon, the patch through which the untethered jailbreak is implemented for terminals that already had a tethered jailbreak done using redsn0w. Version 1.0.2 has been officially released by the team members and it only brings compatibility with build 9B208 of iOS 5.1.1 for the iPhone 4 terminal, so you don't have to wait for anything else and you can do the Cydia update without worry to get rid of the warning.
Leaving Rocky Racoon aside, I inform you that now the Chronic Dev Team is working hard on the release of an update for Absinthe 2.0, an update that will make the untethered jailbreak solution compatible with the iPad 2 2012 tablet. At the moment, Absinthe 2.0 is not compatible with this device because the Chronic Dev Team did not manage to get hold of one to test the jailbreak solution, but in soon things will change.
