If you look at the schedule of the announcement/release of previous Fatshark games and analyze the corresponding intervals, you can conclude that Darktide will be released in the spring of 2021. For those who doubt: if the first gameplay will be shown in october/november this year, you can be sure about spring release window.
It’s not that long to wait, is it? =)
Considering how many projects Fatshark is currently working on, my guess would be late summer/early fall release (2021).
Remember, they are working on V2 expansion Chaos Wastes, Versus, Weave seasons, developing/creating/testing new careers, Darktide, and publishing a game for another indie company.
They may be a small company but they sure are working hard this year!
If we won’t see a gameplay trailer in the next two months, then you’re right and the game will be released in the second half of the next year =)