Apparently, Square Enix is set to announce three currently unannounced games before E3. The games are currently unknown, and according to Gameplayer, two of these games are part of large franchises in the Square Enix catalog.
Square Enix has made no formal announcement but it is rumored that two of the games are multi-platform, which could mean the other is exclusive. Unfortunately, not much else is known about these games; expect to hear something soon.
This very well could be a Kingdom Hearts 3 announcement or perhaps the long-rumored Final Fantasy 7 remake. Until there is an official announcement, feel free to speculate via our comments and forums on what these titles may be.