The well-known iPhone developer Chpwn and the guy behind "Spire" which is the first legal solution for porting Siri to iPhone 4, he has just released one of the coolest Cydia tweaks called Zephyr. The new amazing tweak is a new gesture based tweak, Zephyr is multitasking gestures for iPhone and iPod touch. From swiping up to show the multitasking switcher or quickly swiping to a different app.
Here's Zephyr in action :
Zephyr is available now in the Cydia Store for $2.99