There will be a major update soon.
It's a complete rewrite (once again), but it's compatible with the last version.
The whole thing is A LOT faster now (eg. refractions are ~75% faster). Also shadows are way better looking than in the last version.

I'll post screens very soon (Some first impressions can be found here: http://www.opserver.de/ubb7/ubbthreads.php?ubb=showflat&Number=315961#Post315961 )