The good news is, we should be getting a little more than that. Same for Superman, which will undoubtedly get even more early peeks and reveals.
The really good stuff should be hitting the pipeline in June/July. You'll get Bane, Batman, and MAYBE a tease of Catwoman. I know they're really trying to hype her up as a character.
The standard temp/teaser website should also be up within the next month with whatever branding/logo they're going with. I know they want to have most of that initial stuff finalized long before the Con.
Should be pretty exciting.