So I got two shots from the codex, Hopefully more will show up on the internet soon. This is what people were saying when they were confirming Termagaunt, warrior, and genestealer rules/cost.
Not the best detail, but you can see they are about the same. References to biomorph and bio-weapon options as per 6th ed codex. And no glaring new special rules, so we'll have to see how this goes about.