Launch Radio Networks reports: Dave Mustaine will keep MEGADETH alive for this summer's Gigantour and a couple of archival projects, but the band's future is up in the air after that. Mustaine originally planned MEGADETH's 2004 album, "The System Has Failed", as a solo outing, but used the band name for contractual reasons. Now, he told Launch, he has to decide what to do next. "I still was convinced that this was gonna be the last MEGADETH record," he said. "But, you know, after going out and touring and having these new, wonderful people I'm playing with and this whole new administration that I'm part of, it's just given me a huge, very uncomfortable question mark. Do I go out on top — because MEGADETH certainly is at the top of its form right now — or do I throw the dice again?"Mustaine says he'll make a decision after Gigantour, a traveling festival that kicks off July 21 in Fresno, California. It also features DREAM THEATER, FEAR FACTORY, and others. MEGADETH will release "Greatest Hits: Back To The Start" on June 28 as both a CD and a CD/DVD set. A separate DVD, "Arsenal of Megadeth", will be released in the fall.