I did not talk about this yesterday when the video hit, but in the image above you can clearly see what looks like additional units that are as of yet unreleased. Of course these could just be concept sketches, but its most likely that the image above shows not only another heavier armed skitarii soldier, but an HQ as well in the center beneath the icon.
This was mentioned in the comment section yesterday as well, and a race to see who noticed it first. The first mention of it comes off of Bolter and Chainsword.
What do you think, New Units on the horizon? What else might be hidden on the pics?