John Ross’ blog has images of the 3D sculpt for a 15mm Robot Walker, with variants, that Khurasan Miniatures will be releasing.
From their website:
Another build for Khurasan Miniatures, ready for some advance publicity. This was described to me as a robotic walker used by the same faction (Nova Respublik) that fields the Red Banner series of tanks.
So, after a few iterations, Jon approved the walker, and away we went. One initial model was called for, but as usual, I tend to get carried away. A resupply version, a cannon-toting variant, and a multi-rocket “Katyusha” type variant with multiple unguided rocket tubes soon popped into existence.