I just found a new online catalogue on the german GW.
It features an overview of available bitz (bitz packs) and collectors models. I haven't found this on the US or UK GW, yet. So, this may be of some interest to you guys.
Very nice, the various SM armour development stages (Pg. 22).
Enjoy
http://www.games-workshop.de/home/katalog/assets/GER_Cat_2008_Collectors.pdfP.S. The download is about 17 mb
P.P.S. They ditched all metal regiments except for the praetorians and the old cadian minis.
P.P.P.S. It's just what they offer in this month. They will constantly update the catalogue. Perhaps we will see the old regiments after all.