Here is their announcement: We are now entering the June portion of the "random tour announcement" derby and today's installment is one that is particularly exciting for us as we are proud to tell you that we will once again be in Sonisphere Festival mode headlining a large portion of the summer shows.

The first show of the travelling festival, now embarking upon its second year in existence, will be on June 16 at Bemowo Airport in Warsaw, Poland and joining us are some longtime friends . . . Slayer, Anthrax, and Mastodon! Additional Sonisphere shows will be announced in the next week, and in the meantime you may even want to consider checking back here in a few hours for some more tour updates both in Europe and Latin America (hint, hint).

Tickets go on sale tomorrow, Thursday, December 10. Go to www.sonsipherefestivals.com and choose the country you are interested in for more info on how to purchase tickets. All shows are general admission.

[Here is the other tour announcement they made on Wednesday] Good morning! Wednesday's tour announcement takes us to two different parts of the world. Due to the over-whelming response with a sold out night number one, a second show in Sao Paulo, Brazil at Morumbi Stadium on January 31, 2010 has been added. The May schedule is updated as we travel to Lisbon, Portugal to appear at Pavilhao Atlantico on May 18, 2010 and according to our records, but we haven't checked in with the Danish brain yet, this will be our very first indoor show in Lisbon.