In addition to touting the redesigned PS3 logo, the box art for A Crack in Time features the now-standard PlayStation Network banner on the back. The various PSN features include Trophies, PlayStation Home support, leaderboards and ... multiplayer? That's certainly new to us.
Unfortunately, a SCEA representative confirmed to us that the box art posted on the web was constructed from a template and that all information listed in the PSN banner is simply placeholder. That doesn't mean A Crack in Time won't have multiplayer -- but it means that this is far from the "omg confirmationz!!!!1" that many have been hoping for. Update: SCEA's Jefferson Dong puts it more directly: "There is no multiplayer."