When I heard about the Magna-Grapple thing I thought of two things: the first is illustrated below and the second was, "hey, they stole that ability from the old-school Tyranids!"
Secondly, here's a closeup of some new Blood Angels artwork! I hear they're also getting a "sparkle" ability, where you have to roll a leadership test to not swoon at their carefully tousled hair. Perhaps they're trying to reach out to more female gamers.
Here's the full codex cover.
There were whispers of Space Wolves getting a minor update to give them the "No-Shirt" option but wasn't able to hear what in-game effect it had.
*My apologies to those from whom I appropriated the images, Games Workshop, Stephanie Meyer and lastly myself for having to comb through many pictures of Robert Pattinson to find one that would work.