I'm currently on the BA229 LHR to BWI. Wifi-is up and running but there's no "streaming" package, just the one package with the price breaks from the lower of the two previous options. I've opted for the full flight at £17.99. I wonder if they are harmonising the packages? Wording shows as "full flight stream".
Also available was the "free if you are in First" wording, which doesn't really work on a three-cabin 777. I'm in 1A and there's definitely no F on this flight