Scalebound was one of the most interesting surprises shown at Microsoft's E3 press conference, but all we saw so far of the game was a cinematic trailer. Apparently, though, the game is already partly playable, as mentioned by Xbox Division head honcho Phil Spencer.

Don't have the next PR event set, working on the game, we are playing the game but I'm not sure when we'll show playable or talk story.

While Spencer still doesn't know when we'll see some actual gameplay, he definitely seems very proud of having brought Platinum Games into the Xbox One's portfolio:

Getting to work with @platinumgames, for me, will be a highlight of XBOX One.

Spencer also mentioned that the games that the Xbox One games which will be shown at Tokyo Game Show will "almost certainly" be available in the west as well.  He also confirmed that Scalebound was the "unique exclusive title by a Japanese studio" he teased a couple months ago.

That was Scalebound. Kamiya-san was around the office and we were discussing the game.

Finally, he explained that he's still interested in JRPGs. While they haven't been hugely successful on Xbox 360, he admitted that it's probably also because Microsoft didn't push them hard enough:

Yea, we haven't had huge success on XBOX with JRPGs but we probably haven't tried enough.

As an added bonus, Spencer also mentioned that he's already preparing for Gamescom, and while the plan isn't ready yet, he'll "work through it very soon." Hopefully we'll be able to see more about Scalebound then, even if a playable demo will more probably appear at Tokyo Game Show.