There is a fantastic gaming company called Clockwork Goblin Minis that produce some great looking 15mm weird war figures. You can check out their facebook or twitter to get more intel. The range is called "War Without End". They have been saying that they will produce some of the figures in 28mm.
Love the overall concept. The British and US Powered Armored troops are my favorites thus far. Combine these with Flames Of War or Forged In Battle figures and you have a pretty cool weird war army. Seems like I should dust off some of my Flames of War/Forged In Battle figures and get ready for these.
Clockwork is also sculpting figures for other companies, so definitely check out their Facebook page for a host of really good sculpts.