You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
There are facts behind this. Any Xbox Exclusive never left Xbox. Except Shenmue since Shenmue 3. The reason was because Microsoft agreed with Sony to let them handle Shenmue. Though Unfortunately Jet Set Radio Future and the other remained
An Microsoft employee confirmed here on Twitter just a few months ago that SEGA does indeed own all the rights to FUTURE and that the game is not tied to the Xbox platform in anyway. 
Then I must've never seen the tweet
There are a lot of rumors...
- The source code was lost
- Music rights are holding it back
- Microsoft is holding it back
... but one
of those rumors has now been crossed off the list. 
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.
RR
R
