This is what we found out from Katehizis.com just a few hours ago:

Drummer Mike Portnoy (DREAM THEATER, AVENGED SEVENFOLD), bass player Billy Sheehan (MR. BIG), guitar master Tony MacAlpine (Steve Vai) and keyboardist Derek Sherinian (DREAM THEATER, PLANET X, BLACK COUNTRY COMMUNION) are planning an exclusive tour in Europe and Asia this fall. The nearest tour date to Bulgaria is their show in Bucharest, Romania on October 20th at the "Jukebox Club". Before hitting Bucharest they'll go in Poland for two dates on October 17th and 18th.