Today, Tecmo issued a press release announcing they will be debuting a new game on March 24th.
The game will be announced at the PlayStation Store at the San Fransisco Metreon. The press event is invite-only and will be followed up with a 30 minute Q&A with the producer of the new game.
Seeing as though the PlayStation Store has been the chosen venue for this announcement, it’s likely that it will be a PS3 exclusive. Another thing to take note about, is that the PlayStation Store is directly across the street from Moscone Center where this years GDC is being held.
[Source]