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Not much is known about this game yet. It's release has been confirmed in Japan in June/July. File:Tol.jpg
Tracks Of Light
There is a new feature in the game and is probably the reason the game is called "tracks of light". With your styler you can draw "tracks of light" on the ground to call pokemon from where they usually are to your location.
The pokéassist feature has changed for this game. Instead of usuing your styler to control the pokéassist (i.e. electric) the actual pokémon would com onto the screen and use it.