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.

Today marks the 25th anniversary of Live Aid, the Bob Geldof-organized African famine relief concert that remains one of the cultural signposts of the ’80s. For readers of this site, the event is perhaps best remembered as the tipping point in U2’s ascent from college-rock upstarts to global superstars.

Fans who shelled out big cash for the just-issued mega-deluxe edition of U2’s new ‘U2 360° at the Rose Bowl’ concert DVD received a nice bonus: a red-vinyl 7-inch single featuring the previously unreleased song ‘Soon,’ a 2-minute track left over from the ‘No Line on the Horizon’ sessions.

While U2 was knocked out of its first-ever Glastonbury headlining slot by Bono’s recent tour-scuttling back surgery, fans still got a taste of the Irish megaband tonight when The Edge joined Muse for an encore of the all-time classic ‘Where the Streets Have No Name.’

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.