The update comes via a new Cydia Installer package available this morning from the Changes tab in Cydia.
Saurik explains the release:
Due to evasi0n 7 having been released with an unofficial build of "Cydia", I had to upgrade Cydia via a package. This more complex, as packages I release in my repository have to work for all users, not just those on the latest firmware. I have managed to get Cydia 1.1.9 working on iOS 2-7.
Please understand that there are still some things about this build that are "not quite right" (including the dropbar, which I want to have work like the iTunes Store's song preview bar, but right now is simply broken). I needed to get this out so I could move to Substrate, and thereby kind of hacked that together.
A special thank you goes out to Surenix (new tab bar icons), Kyle Matthews (new UI images), Ryan Petrich (general UIKit help) and Optimo (late night testing).
Check out some screenshots of the new design below or jailbreak your own device using the iClarified Jailbreak Wizard. Please follow iClarified on Twitter, Facebook, Google+, or RSS for more updates.