RE:Vision Effects has released ReelSmart Motion Blur 5 with GPU support for Apple Final Cut Pro, Adobe After Effects, Adobe Premiere Pro, Avid Media Composer/Symphony/Newscutter, The Foundry Nuke, Assimilate Scratch, and Sony Vegas Pro.
ReelSmart Motion adds more natural looking blur to a sequence. You can add as little or as much blurring as you need, or even remove motion blur. Also included in some RSMB versions is a feature that allows you to blur with user-supplied motion vectors that, most likely, come from a 3D animation system.
Demo versions of ReelSmart Motion Blur 5 are available for download. Pricing depends on which software you use with with. Go to www.revisionfx.com/products/ for more info.