in no particular order, my predictions...
magnificent
breathe
nloth
moment of surrender
goyb
streets
pride
sunday bloody sunday
vertigo
miracle drug
fly
i'd like to see until the end of the world
^^ Exactly. Musically, they were top notch, even if their music was pop-ish. They WERE a pop band. They're influential, very much, but not the best bandever or anything like that. That said, I don't think sales reflect awesomeness of any musical group/artist. I myself am more of a U2 fan than a beatlesfan.
Well, Bono has already revealed that U2 is going to release another album by the end of the year, on the theme of pilgrimage.
http://www.guardian.co.uk/music/2009/feb/15/u2-no-line-on-the-horizon
Scroll REALLY down, and look the lines just before the SPEED DIAL bit.