In addition to the 774 Deaths trademark, which might lead to a Nanashi no Game localization, we found two more hints at future titles from Square Enix Japan. The publisher filed trademarks for Drakerider and Blood of Chaos in Europe.
Both registrations are for use with video games. While Drakerider: Blood of Chaos could be a single title, Square Enix registered separate domain names – drakerider.com and bloodofchaos.com. Right now the sites are empty.
Going by the title alone, Drakerider sounds like a dragon riding game. Square Enix released two of those for the PS2 as well. Remember Drakengard and Drakengard 2? Blood of Chaos sounds an awful lot like Blood of Bahamut. Could Square Enix be making a sequel to their multiplayer DS game?
Thanks for the heads up about the domain names Liam!