Many of you will probably not use Siri often enough to have realized, but when the voice-recognition software is in action, banner notifications are disabled by default. Clearly intended to free up as much of the interface as possible for the information yielded by Siri, it's perhaps counter-intuitive to enjoy one feature whilst forgoing another, and thus, jailbreak developer Sirifl0w has created a tweak to enable the notifications when consulting Siri.