The new Space Marine models are currently in a closed beta of sorts. Ultramarines release coming very soon.
They will be available on SFMLab as well as the Facepunch forums thread I've linked earlier.
I love your current ultra marine models, I cant wait to see what else is added
Where could one certain Up-And-Coming artsy brotherfucker seize a set of Imperial Fists instead of Ultrasmurfs?
Have a good one.