Chpwn, dev of Infini tweaks ( InfiniBoard, InfiniFolders, InfiniDock ), ProSwitcher and GridLock etc…, just announced that he submitted a new tweak to the BigBoss repo called Covert. Covert will be integrated in MobileSafari and will allow us to privately browse pages.
The tweak was already submitted to the BigBoss repo, and should be available for free in Cydia soon. We will keep you updated. Stay tuned….