Well, the good news is though it does appear production is going to start and honestly that is the news that I have been waiting for, any date up til now was hypothetical because they hadn't even said when they were going to start making the movies, So I am excited that the Avatar team is gearing up to start work on the sequels, the delay does hurt a bit, and with the gap between 2021 and 2024 it does make me wonder if there is potential for it to end up being 4 movies from 2022 to 2025, the 11 year wait for the first sequel is a long time, but then again that is par for the course for JC, he is known for taking is time on his projects, and with what he is trying to do it makes sense, but it does stink having to wait that long, that being said I'll wait as long as it takes

I do feel though for people that have become fans of the franchise and have been waiting that might have trouble making it to all the sequels, due to age or other factors( frankly it could happen to any fan)

but I hope for the best and those who want to finish this journey are able to