Actually, it's Marvel's 70th anniversary. I've no idea why they're making what seems the equivalent of a 75th anniversary set of celebrations about it, given that said 75th is coming up in only 5 years anyway. But they do seem to be going all out for it. Hmmm...they do have the minor problem that 2013 is Superman's 75th and 2014 is Batman's, so maybe they're trying to avoid the crush a bit?