Not a preview but I rather have this here than in the Twotter subforum (will close the topic there). I am now really planning the new version and want to know one more time what new features will be requested. As this is a serious amount of work it will not be a cheap update.
Here is the list we have now:
Serious update of the VC with PBR, RealLight and TrueGlass
Modest update of externals (I think they stood the test of time very well)
Option to include the most