I've been waiting for plastic plaguebearers with bated breath for a long time now, and GW has not disappointed. I went through and made some screencaps of a video made by 9k Painting, and here they are.
I'm obviously most excited about the bearers, but I'm also looking forward to painting up the new Flamers. I don't really use Scribes, Screamers, or Seekers in my current list, but this might need to change once I see how they'd fit into my playing style. I hear the Screamers have gotten a particular boost, so they might be getting some paint shortly.