I was playing around on Hasbro's news site and I found pics of a few new sigmas in the RAH catalog section

82391 Ground blast Heavy Duty
82878 Cobra Leader Windfire
82865 Lockdown
82863 Toxic Zartan
82877 Dojo Training Snake Eyes
82864 Samurai Storm Shadow


ok we knew about Zartan and Lockdown and SE
that last one is the best Sigma I have ever seen Budo better watch out!

here is a pic of Storm Shadow samurai

I predict that in the not so distant future, a forward thinking costomizer will probably create Budo from this mold.