The first bit of information comes from the preload of the game which is now available in Japan. Apparently the following information is listed:
-Single Player RPG
-4 Players Online Quests
-32 Players Indirect Online (For Information exchange and item trading)
Information was discovered by mod duckroll over on neoGAF.
The second bit of information comes from Cheesemeister on twitter, who is a well known translator in the video game community.
It says that Xenoblade Chronicles X supports the GamePad, Pro Controller, and USB keyboard. There is also Miiverse support and Off-TV play. The game is 720p.
Also direct from the stream earlier, Japan will also be getting a bundle which includes some neat looking extras:
