Any idea if Cineform's Premiere plug-in will support HVX200?

no idea, but i cant wait till prempro2 is out :) should be a doozy

I think the Aspect 3.3 version does. If not, the next will. Cineform have posted somewhere about the upgrade covering the Panny.
OOps! Looks like the JVC is covered in this release. I don't know if cineform deals with Panny's version of HD.