MuscleNerd just posted a tweet congratulating PlanetBeing, comex and chpwn for another userland jailbreak. The image above is a high-resolution screenshot of Cydia ( scaled down to 550px wide, to fix into the post body ) running on the iPhone 4.

Unfortunately, the tool cannot be released publicly yet, because it uses some of Apple’s software.
P0sixninja says: ‘the jailbreak shown is a more of a stepping stone for us, it can’t be released because it includes some of apples software’
Planetbeing: ‘Don’t want to speak for @comex, but afaik no one has breathed a word about release date and what we have right now is nowhere ready’

Below, Cydia in High Res.