U2 reveal free charity single 'Invisible' – listen
Every download of new song will see Bank Of America donate money to the Global Fund to Fight AIDS
U2 to premiere new song during Superbowl
'Invisible' will be available as a free download for 24 hours after the February 2 event
U2 to guest star on Jimmy Fallon's first 'Tonight Show'
The band's ex-manager Paul McGuinness also speaks out
U2 return to stage for first time in three years at Haiti benefit concert – watch
The band also picked up Best Original Song at the Golden Globes in Los Angeles
U2 to receive Sonny Bono Visionary Award at Palm Springs International Film Festival this weekend
The group will receive the award for their soundtrack to Mandela: Long Walk To Freedom
U2 return to 'spiritual home' with new album
Bono and Co. will release their new album on Island Records
Bono writes essay paying tribute to Nelson Mandela
U2 frontman says former South African leader was a "forceful presence" in his life
U2 unveil video for new single 'Ordinary Love' - watch
Band post lyric clip from forthcoming biopic 'Mandela: Long Walk To Freedom' on their Facebook page
U2 to premiere video for new single 'Ordinary Love' on Facebook at 7pm (GMT) this evening
Track is taken from soundtrack for Nelson Mandela biopic <i>Mandela: Long Walk To Freedom</i>
U2's manager Paul McGuinness to step down?
Madonna's Guy Oseary is also confirmed to take over the band's day-to-day affairs