JAL are upgrading all the cabins on their 777-300ER and LHR will be the first route to see them. In Business (from JAL website
http://press.jal.co.jp/en/release/201208/002217.html ):
- Full, lie-flat seats with expanded seat width
- Unobstructed access to the aisle from every seat
- Enlarged personal TV screen from 15.4 inch to 23 inch
I'm not sure I can get far enough away for a 23 inch screen to be useful, but possibly a real TP and Avios earning alternative to BA? And IIRC flight times are more civilised for those of us that prefer not to go straight to the office....