From the information we have been given there are no plans for BD recorders at present. They are planning a twin-tuner Freeview HD PVR for later in the year but, otherwise, the recorder market will continue to be served by the RDR-DC100 Hard Drive/DVD Recorder and its bigger capacity derivatives. In Japan they have done Hard Drive recorders with Blu-Ray Disc playback drives.
Personally I don't see BD taking off as a major recording format. Removable media are becoming less desirable for recording as more and more people depend on Hard Drive storage. As home computer networks and TV systems converge more and more, I can see the future involving recording to NAS drives or even solid state memory.