Battlefront has made available the manual for their upcoming their Combat Mission Shock Force British Module.
I briefly browsed the manual yesterday and it has a very good summary about on the British forces and equipment we will soon command into battle.
The British module will bring up the CMSF engine to its v1.2 version. Updates for the v1.2 version are available in an updated manual.
Taking gossip and previous posts by the developers at the official forums, it looks like the release of this module is imminent.