It looks like the Dark Templar. Here is a shot of the new DT.
http://www.1up.com/media?id=3359859
And a shot of the older DT
http://darktemplarclan.interfree.it/...XZerg3high.jpg

Note, that I am replying to the last poster, but I'm also refuting my argument that there was a hybrid in that first shot I posted. I think it is a DT. It is blue because it wasn't implemented yet.