So ive been around for a long time and have kept up with the news for the most part, but it works like this:
We had the Blue server and Red servers as PvE and PvP until 2019. For a year before that the buildup for a green server that would launch that would follow the precise timeline was coming, and it eventually did. You can read how its supposed to work here:
https://www.project1999.com/forums/s...d.php?t=333743
That said, the original plan was that they would run a seasonal system like in a lot of seasonal systems in games like Diablo/Path of Exile where the timeline goes ahead, and at the end of a time constant, it would cycle into the off season server, and a fresh season server would open. However, a lot of folks are for or opposed to this idea, and further updates from staff have put it into the air on how they will do that.
The patch timeline on green as of today late 2022 is that all patches are introduced, and now we are in a finished Velious, just like the Blue server. Originally, they said in that post that the green server would end no earlier then January 2023, which is coming soon, however they merely said it wouldn't end earlier then that, it may end far later.
So the question you have, if I understand it, is if its known when the next season starts of the original timeline, and the answer officially right now is that it isn't known, and anyone who says they know is likely fooling with you.
Many players think a neat idea would be to launch the next season on the same exact day that live EQ launched, making it a really perfect day to day timeline with the original game. If that were the case, it would be march.