I thought it was strange in that it was like a total 180 from the old Codex: Sisters of Battle in it's attitude. Am I alone in thinking this way? Anyways, I think the new Sisters of Battle look bad ass, along with the new Inquisition models, that throne is bad ASS!
Plus they redid the immolator, which I thought looked dumb when it first came out 6 years ago. The new one looks awesome. (plus I really like anyhting based on the re-designed Rhino frame).
The new close combat guys are cool too, Arco-flaggilum and pentience machine (?) I dunno their names, but those are cool too.

I've read the codex and seen a Witch Hunter army in action. I think the expanded number of unit choices for the Sisters has given much more flexabilty without making them into "girl marines."