From the announcement:
Mars Attacks – The Miniatures Game is the whacky tabletop game of martian mayhem and the second expansion pack arrives in retail in April 2015. Wave III brings with it the fearsome Science Division, Tiger Corps, giant mutant bugs and most impressively, the 7" tall Martian Giant Robot.
All of these miniature kits come ready to use right out of the box. Except for the Martian Giant Robot (which has a number of different weapon options), these miniatures are pre-assembled and come in colored plastic, meaning that hobbyists and gamers can take them out of the box and start playing with them immediately. This makes Mars Attacks easy to get started and fun for the family.