Word on the street, um... AE-List... is that there is an Adobe After Effects update available. It's not on their site yet, but you can get it by going to the Adobe Software Update thing-a-ma-jig. Open After Effects Help Menu. The last item is the Update.
Harry Frank says "Open GL previews on the Mac.. WITH shadows and blending modes." Now that sounds like something to get excited about! Wheeeeee!