The Jam has not started, yet.
Short version: the jam opens Nov 1 at 21:37 UTC (1:37 PM PST), the theme is announced then, and you have until Dec 1 at 1:37 PM PST. Make the game during November with any engine or language you like, keep the source in a public GitHub repo, then make an itch.io page for it (Upload Game at the top of itch) and press Submit on the jam page before the deadline. You can update it right up to the end, so upload something early. AI isn't banned, but the submission form asks if you used it, so just answer honestly. Good luck