OK, this is probably going to be the longest running betting game yet but I'll start just for fun.
Taking bets for the 777-9 EIS date. Pick a random date. Closest date to actual EIS wins.
Because there is a bit too much uncertainty, I'll allow one single lifeline to change bet but it must be done on or before the 30th of June 2020. You will forfeit that lifeline if you haven't made an initial bet by the 31st of December 2019.
(Mods, feel free to edit and update this thread when necessary.)