I just found this link:
http://forums.sirstevesguide.com/showthread.php?t=27916
Loads of info and pictures of the kits there, and, I have to say, they look REALLY impressive, light years ahead (pun intended) of the old AMT/ERTL Star Wars kits!
The Republic Star Destroyer is particularly impressive-looking. The "snap-together" kits also look pretty good in terms
of moulding and detail.
They seem to be a decent size too, compared to the old AMT kits, though not as big as the Hasbro ready-made toy ships. I'm guessing around 1/32 based on the pictures (other than the Star Destroyer which is probably around 1/2000)
Apparently the AT-RT and ARC-130 will be European exclusives, though... not a problem for me since I'm in the UK, but a great shame for US modellers (not to mention incomprehensible, since surely there are more Star Wars fans and collectors in the US than anywhere else)