Along with the announcement of Resident Evil: Revival Selection, the latest Famitsu reportedly has some smaller-scale Resident Evil news as well. According to leaks from the magazine, Resident Evil: The Mercenaries 3D will be released in Japan on June 2. The Famitsu article also introduces Albert Wesker and Jill Valentine as playable characters, with Jill as a more "balanced" character, and Wesker more skilled with heavy weapons.
The last we'd heard about any release date was Capcom's announcement during the January 19 3DS event of a "summer" release in North America. If it's hitting Japan in June, it seems to be on track to make that summer date here.