Additionally, new Minifigures toys will include codes for playable in-game versions of the character. There will be roughly 100 characters to collect.
The game is scheduled for release in the second half of 2014. This will be the same time period that Collectable Minifigures Series 14 is expected to be released. LEGO usually releases 3 series a year. Series 12 will be based on The LEGO Movie and Series 13 is rumored to be based on The Simpsons license.
Based on this info, I would expect Series 14 to be linked to this game. The codes included with each Series 14 minifigure could add new minifigures or abilities to the online game.
From the released screenshots, there are some minifigures pictured below that have yet to appear in any previous Collectable Minifigure series or set. I would expect some of these minifigures to appear.