Don't think it's been mentioned yet. BBC HD transponder on 28e is changing parameters later today, basically it's changing from QPSK to 8PSK and from 8/9 to 2/3.
Most 3rd party boxes will need reconfiguring
See here -
Most 3rd party boxes will need reconfiguring
See here -
Code:
http://www.bbc.co.uk/blogs/aboutthebbc/posts/bbc-hd