A little late in getting this out, but still worth mentioning. Mega Minis has release their lovely Demo Bot in 15mm. A faithful reproduction of the original 28mm version, this robot would make a fine addition to any science fiction board.
It comes with an assortment of arm options so that you can weaponize it or field it as a simple utility bot.
If you are a multi-scale gamer, fear not as this gigantic bot is perfectly suitable for use with your 28mm minis as shown below.
The poses are a bit... retro (at least by 15mm standards), but they are very faithful reproductions of the popular 28mm range.
Next, we have tons of new goodies from Khurasan Miniatures.
The long-anticipated Earthdoom range is now on the web store. The Corsair Battle Suits and alien Intruders (pictured above) are the first of many promised releases in this range!
The End Times post-apocalyptic range has been updated with The Infected - transhuman savages. Even if you're not a post-apoc player, these would be great proxies for Serenity Reavers or the creatures from Pandorum.
Gamecraft Minis has updated their range of official Tomorrow's War buildings. The Structures For The Humans series now includes a variety of really cool elevated walkways and a raised landing platform. And a second faction, the Marshborn Crusties, now have their own elevated gantries and multi-story buildings.
Brigade Models is steadily upscaling their vehicle range to fit with most current 15mm figures. The M-83 Curtis Hover Tank (pictured above) adds some heavy firepower to the American Republic.
And finally, Combat Wombat has added a range of building accessories and street furniture. These bits are becoming quite popular - excellent for converting electrical boxes, plastic storage containers, or even card/foamcore buildings.