Cydia, the jailbreak App Store, is without a doubt the symbol of jailbreaking. Rock, a second App Store, has had some success of its own over its 18 months of existence. Well, times have changed. Saurik, Cydia’s creator, has now acquired Rock and will merge it into Cydia. As a result, all apps, licenses and so on will be moved from Rock to Cydia over the next couple of days. This will bring the total number of available jailbreak apps, themes and extensions to over 20,000. As for Rock, it will be shut down.