There continues to be demand for Frameserver plugin for Premiere Pro and building new features, but I'm not finding enough time to work on it. CuminCode, a small company I know, have agreed to pick it up and release a commercial version. I hope this will make Frameserver more useful and build out great new features over time.
Their new release is Frameserver 4.0 which you can find at www.cumincode.com/frameserver/ . You can get a trial license on first use and purchase a full license when needed from within the plugin itself.
Notable features/fixes include:
Capability to frameserve in 10-bit YUV format (v210)