id Software has released an update to Rage and Rage HD for iOS devices adding optimizations for iOS 4 and the iPad 2 along with HDMI TV output support and more. Released last fall, Rage is a first-person on-rails shooter built on id Software’s powerful Tech 5 game engine where the player must travel through a mutant-filled wasteland collecting weapons, ammo and power-ups to survive. The latest update to Rage has been recompiled under iOS 4 for…