Couple fun facts after an initial scan:
The Heirophant is now cheaper, but can purchase significant biomorph upgrades. One of them makes it an Assault Vehicle Transport with a 20 model capacity!
How many models does a carnifex count as?
The Red Scorpions now have some fluffy rules for two other side characters, one of them being the Dreadnought Brother Halar. This pleases me greatly, since I built a Halar back in 2006 when the first edition came out:
Oddly, I couldn't find a pic in this new edition of Halar, though he had a nice little spread in the old book. I think I might be the only hobbyist in the world to have built one already.
EDIT: So it's not "a nice little spread" so much as a picture, but here it is for reference from the 1st edition book: