Toolfarm reports on a Windows-only uprezzing plug-in for AE and Premiere Pro.
SuperResolution from "Dee Mon" uses super-resolution methods to uprez video. According to the site, "The plugin uses information from neighbor frames to upsize current frame. It accumulates information, so the more sequential frames are processed, the better quality you get. When it's first applied to a layer, it takes just a few frames preceding the current one...This super-resolution method (used also in Video Enhancer) has been compared with several alternative video upsizing methods and solutions including plugins from Red Giant, Digital Anarchy and Topaz Labs. You can see the comparison here."