The DCU Source blog today released the first of Jim Lee's variant covers, to appear on LSH v6 #1:
Via the Fire Wire comes this Newarama video from last week's C2E2 in Chicago (jump to the 2:00 mark), in which he discusses the series of covers.
Paul Levitz's last decision as publisher, as Lee says, was for Jim Lee to do variant covers for the first six Legion issues. He says the Legionnaires were his favorite characters from when he was growing up. First is Saturn Girl from the 70s in her pink costume (his favorite era) - but in the video, note that they show her in her 60s red outfit in the background. Each cover will feature one Legionnaire from 50s, 60s, 70s, 80s, 90s, and 00s but not in that order, along with spaceships and the HQ. You'll be able to put them together and show a whole chronology of what the Legion has been about.