I hope they don't release new models until after the beta. Then people won't be waving the new models everywhere like idiots.
Besides, they're not even done.
New Trooper's texturing = partially done - Animations? No one knows. (larmour/helmet texturing finished)
Flamethrower, Chaingun and ckit(?) = Unstarted - Nonbegun - Definished
I HIGHLY doubt that we're gonna have new alien models in 1.2 but if you look at the first-person goon legs on stannnum's site, they are quite different from the goon's legs now, not to mention that the goon bites, not clubs with its legs.