Nineties-era prog-metal favorites Queensryche [ tickets ] and Dream Theater [ tickets ] are spending the summer on a North American co-headlining run.

A month's worth of dates are set to get underway in late June, and "many more" stops will be announced "very soon," according to Dream Theater's website.

Queensryche is working on the follow-up to its 2001 live set, "Live Evolution." The new album, which will be the group's first studio effort since signing with Sanctuary Records in 2001, is slated for an early summer release, according to the label.

The as-yet-untitled album will also mark the group's first collection of new material since 1999's "Q2K," which featured new guitarist Kelly Gray. Earlier this year, Sanctuary announced that original Queensryche guitarist and co-founder Chris Degarmo had rejoined the group to work on the new album

Queensryche's commercial popularity peaked with 1991's "Empire," which spawned numerous hit singles, including the GRAMMY^®-nominated ballad "Silent Lucidity."

Dream Theater broke into the mainstream with its 1992 hit "Pull Me Under." In March, the group headed into the studio to record the follow-up to last year's "Six Degrees of Inner Turbulence."

Fellow prog-metal outfit Fate's Warning will open. The group's most-recent studio release is 2000's "Disconnected."