From Gaming Report:

Rackham is showing off models for their new plastic miniatures game "AT43". The figs are prepainted and plastic making it a very different game for them compared to their other lines. The game looks to be a skirmish "Mech." style game with small tactical units and infantry. The game looks to be approximately. 28mm. Rackham staff are not giving a lot of information on the game just yet. The game is due out for Christmas.