https://twitter.com/SerebiiNet/status/335895958577631232
Serebii Updates: Pokémon Smash reveals . that there will be XY content weekly http://www.serebii.net/index2.shtml
What are the odds that that content will be anything significant though......
It will likely be the small things shown on the site/corocoro that they didn't get around to.
That is, things like the new attacks used by the Pokemon, talking about clothing customization, etc
I may have missed it, but did they ever show the full trailer? Because that will probably get shown, too