Okay jailbroken iPhone owners,

Did you know multifl0w?
Anyways, multifl0w is an addon from cydia which brings the ios 7 multitasking looks to all iPhones, including iPhone 1st and 2nd gen.

If you want to get the 'swipe up to close' feature, change your multifl0w theme to cards in its settings.

Go ahead and check it out...