There are four aircraft assembled that BA have yet to receive and ZBLG goes into final assembly soon so they're certain. ZBLH isn't due for assembly for months so from there on it is just assumptions but Boeing haven't reported any cancellations from BA as of February 28th.

Boeing are saying the current backlog on the 787s should be cleared by the end of the year but they still haven't delivered any variants to anyone since mid October. I would have assumed the latest frames to be assembled are free from the possible defects that's causing the current jam but they're not getting delivered either.