It's no surprise that Resident Evil: The Mercenaries 3D will be launching before Resident Evil Revelations does on the 3DS, but it appears the two won't be launching in the same year; with the former scheduled for a June release, we may have to wait a while longer for the latter.
According to the official Resident Evil Facebook page, Capcom is planning to release the game sometime in 2012. Whether it's the first or second half we don't know but Capcom has promised more details at this year's E3 event.
When The Mercenaries 3D launches in June, the game will include a demo of Revelations, allowing gamers to sample the ocean liner locale as Jill Valentine. Hopefully, the demo will be substantial enough to show how the game intends on returning to the series' exploration roots.