Looks like they've come out with a bunch more technicalish info... Looks like this will be the end of the studio series ie not running in parallel like they had suggested.
Reasonably efficient, aluminium drivers used throughout, nicer looking finished. They appear to have rethought the driver surrounds to allow about an extra 3db efficiency.
I'll be really dissapointed to see the studio series go if that's the case, although I don't know if that's set in stone yet.
Sound quality is obviously still a big question mark at this point though...