The next two singles will probably be "Sometimes" and "All Because of You," in my estimation. I guess I'm not so sure of the order of release, but I'd go with "Sometimes" first followed by "All Because of You" once the band hits the road with the tour. They did the same thing with "Elevation," which wasn't released until the tour had been underway for a while and a mid-tempo track ("Walk On") had already come out. It's a common strategy which they also tried to use for Pop ("Discotheque," "Staring at the Sun," then "Last Night on Earth" while the tour was cookin' along).
Beyond that, I'd LIKE to see either "Love and Peace or Else" or "City of Blinding Lights," but I'd put my money on either the latter or the underwhelming and predictable (but still very, very listenable) "Miracle Drug." I dunno'....to me, most all of these songs COULD be singles (minus the ghastly "A Man and a Woman"). My vision is clouded by my being a fan....it's tough to be objective, as I can normally sniff out the singles from other artists right off the bat.
Either way, I figure we're in for a pretty good year of radio, provided the stations continue to stay behind the album/band.