Back with more Sonisphere dates to fill you in on... two of 'em to be exact. First up, Sofia, Bulgaria with the show hitting there on June 22 at Levski Stadium. Five days later we will be in Istanbul, Turkey on June 27 at Inonu Stadium. Both shows will include the "Big Four" of 'Tallica, Slayer, Megadeth, and Anthrax along with very special guests Heaven & Hell.

Tickets for Sofia go on sale a little later today at noon local time here and Istanbul tickets will be available tomorrow, March 5 at 11:00 am here.

There is one more Sonisphere show on the calendar... we'll be back here with the details shortly.