MarcoSkoll pointed out this Warseer thread where it is reported that GW are slowly shutting down the Specialist Range - as models go out of stock, they are seemingly not being replaced.
It would certainly be worth considering which models you may wish to purchase - with many Specialist Games figures being among the most distinctive and interesting figures released by GW, they are a boon to INQ28 hobbyists.
Just a head's up!
Specialist Games Sell-Off
by Molotov | Apr 30, 2013