On the third party stuff I can shed some light.
I’ll let the companies in question detail this themselves, but Northern Lights, Paralumino, Konkeptoine and Ramjac are all going to move to UB. In the case of Northern Lights, Blair has trumped everyone and will have all his products ready for the 6.6 release (or just after it). Woooo! 
I have no information about Alexey Kondratiev’s plug-ins…
There is some very positive information about TrippleDTools but I have nothing concrete so I’ll keep my mouth shut. Perhaps someone else knows more…
Matt has posted some additional notes about 3rd parties in the EI Development Status forum.
http://www.eitechnologygroup.com/phpBB2/viewtopic.php?t=6686
Ian