The 3-coach set in Carmine and Cream is already available. Also two matching corridor seconds to allow configuring as 4-set or 5-set. For BR Green you'll either have to wait for Bachmann to produce this, or alternatively, do as some of us are doing, and replace the decals on the SR green coaches with BR ones.
It's around 18 months since Bachmann released these new coaches, but it seems most shops are still awash with stock. Perhaps that's one reason why we haven't seen any new versions yet.