They announced recently that they're getting a Japanese dev to make at least one game for the XO. I'm sure more will be released on the console through its lifespan. I just hope we get a little more than 360... lol
--- "Bad biscuits make the baker broke bro" - Jake the Dog.
Does Japan even output very many relevant console games outside of Final Fantasy, Tales, or the occasional Level 5 game anymore?
If you want 'japanese games', get yourself a 3DS and/or a Vita. Japan's gone portable ages ago, sir. Get with the program.
But to answer the question, yes, of course Xbox One will secure a few Japanese interest exclusives for its Japan launch, as well as have big name mutliplat titles. Hopefully, with the PS4 and Xbox One's components being more similar to each other than the former generation, we'll see more Japanese games that wouldn't have otherwise been a multiplat, be released on both consoles so that they're available to as many people as possible.
That said, the exclusives they secure will more than likely be timed exclusives depending on the company, but whether or not the Playstation release a year later will make it outside of Japan is a crap shoot, too. I... don't think you're gonna see many weeb-fests like Hyperdimension Neptunia or Idolm@ster on it though... at least not exclusively.
Don't forget about the Wii U, either. Mistwalker and Monolithsoft seem to make games exclusively for Nintendo nowadays.