JB ExeNow is runs over Android 4.1(Jelly Bean).
You can now swipe up from the system bar to quickly launch app or shortcut or do nothing.
Google search with Google Now will start by swiping on the system bar,
You can replace the Google search, will be able to expand the status bar in the same operation.
Because now you can operate from the navigation bar, you can launch the apps at any time.