British heavy metal legends JUDAS PRIEST will headline this year's edition of the Metal Hammer Festival, set to take place August 10 at Spodek in Katowice, Poland. Also scheduled to appear are Polish death metal veterans VADER.According to a posting on JUDAS PRIEST's official web site, the band is currently working on new material. The message adds that "all is going really well" and promises that more details will be made available at a later date. A separate posting on JUDAS PRIEST guitarist Glenn Tipton's official web site reads, "As you may already be aware, PRIEST have announced a fair well world tour beginning this summer. "We are all excited about the tour and are currently having meetings to discuss the stage production, but above all the set list. We intend to include some classic PRIEST songs that we haven't played before and of course the old favorites that everybody will want to hear. "To put everyone's mind at rest, this is by no means the end of the band. In fact, we are presently writing new material, but we do intend this to be the last major world tour." JUDAS PRIEST's most recent double-disc concept album, "Nostradamus", sold 42,000 copies in the United States in its first week of release to debut at position No. 11 on The Billboard 200 chart. This marked the band's highest-ever chart position in the U.S. In Canada, the CD opened at position No. 9 after shifting close to 4,000 units. JUDAS PRIEST's previous studio CD, "Angel of Retribution", premiered with 58,000 copies in the U.S. back in March 2005 to debut at No. 13. JUDAS PRIEST announced in December that it will head out on its farewell world tour beginning in 2011. The band intends to hit all major cities across the globe as they sign off on a career that has lasted for nearly 40 years. The "Epitaph" tour will launch in early June and hit a number of European festivals throughout the summer, with more dates yet to be confirmed.