BA have published a list internally outlining the rollout over the next couple of months. Two more 767's (BNWV and BNWH) are due for AVOD being fitted by end of Jan and Mid Feb respectively.
BNLK is due out on 21st Jan, with CIVS and CIVX a couple of days later.
BYGA and BYGG in the first week of Feb, CIVI Mid Feb and CIVF & BNLU by the end of Feb.
BNLU is the first "Mid-J" configured plane to be upgraded.
If this is achieved, then I think that's a pretty respectable rollout rate - 15% of the 744 fleet with the new seat and AVOD by the end of Feb.