Activision confirmed the existence of Guitar Hero 5 last week, and now they've released details about some of the game's new features. Quoting 1Up: "... the new Party Play mode allows players to swap instruments and difficulties on the fly — even in the middle of a performance. You'll also be able to play Guitar Hero 5 with any combination of instruments, be it four drum kits, two microphones and two guitars, or any other possible configuration of four players." They also listed a few of the songs, which include "All Along the Watchtower" by Bob Dylan and "Ring of Fire" by Johnny Cash. Meanwhile, their music-game rival Harmonix has revealed the full set list for Rock Band Unplugged, coming out early next month for the PSP.