With their injury-delayed 360° Tour finally set to resume Friday in Turin, Italy, the members of U2 rehearsed Sunday onstage at the Stadio Olimpico di Torino — and treated fans assembled outside the stadium’s gates to what is believed to be a brand-new song.

Nearly two months after scrubbing its North American summer tour, U2 today announced 16 rescheduled dates for the 360° Tour’s second stateside leg, which now will open May 21, 2011, in Denver and run through July 23, 2011, in Minneapolis.

This week’s new releases include the ‘U2 360° at the Rose Bowl’ DVD/Blu-ray, the new single from Erasure frontman Andy Bell’s forthcoming solo album, a new Television Personalities album (‘A Memory is Better than Nothing’) and a reissue of King’s ‘Steps in Time.’

With Bono’s recovery from back surgery expected to take at least eight weeks, U2 today canceled its first-ever Glastonbury appearance and pushed this summer’s North American leg of its massive 360° Tour to sometime in 2011.

U2 today postponed the opening date of the second U.S. leg of its monstrous 360° Tour — June 3 in Salt Lake City — after Bono this morning underwent emergency surgery in Munich ‘for an injury sustained during tour preparation training,’ according to the band’s official site.

U2 today announced that Lenny Kravitz, The Fray and Interpol will open most of the band’s 360° Tour stadium concerts in North America this summer when the massive trek returns for a second round.