In the spirit of sharing what I know, one of the three 77G laggards (the 777-300ERs with the 14F 56J interiors) was meant to be going "under" for retrofit on 31/03 but hasn't so far. Reason for it are delays in 78X deliveries. The plan back in 2023 foresaw a 78X arriving in March, another two in May, one in June and another in August. The March delivery hasn't happened, and the two in May won't happen either.