If you've seen or used Auxo, you've probably been impressed at how much better it is than the standard iOS app switching, which let's be honest is pretty terrible. Auxo is a brilliant tweak which completely transforms the usual iOS app switching, if only Apple would actually include it officially into the OS.
The person behind Auxo has now come up with something different but stays with app switching. Instead of having to double-click the home button, his concept cuts out any button clicking, instead gestures are used. The user simple swipes up from the bottom edge of the screen, it'll then split the screen in two, revealing your most recent apps bang in the middle. You can then swipe left or right to access more options. It's a very good idea which would make app switching a lot faster. Of course there are some issues because some apps like Flipboard require you to swipe up from the bottom to go to the next story. It'll be interesting to see how this works out if it ever were to be released.