From x-bugs.it:

The first expansion for Micro Mutants, the game that brought to the forefront the classic tiddlywinks game in a completely new variant, presenting funny armies of bugs with different peculiarities and special powers, is on the way.

The expansion Micro Mutants: Invasion will feature the Samuracnids, fierce bug warriors from the Rising Sun, and the Xenomantides, charming amazons from the deep space.