In a reply to a comment on Facebook, GW said that "Old world stock will be replenished as soon as possible! We will also have news on the next faction to make a return this Saturday."
They have a big preview on Thursday/Friday, but they still keep the ToW for Saturday. I hope it means they have a LOT to announce.
Tomb Kings video is up: https://youtu.be/Dni5AslUJPo?si=D6peZb30llUv1vHh
Edit: here's the article - https://www.warhammer-community.com/2023/12/29/old-world-almanack-the-noble-history-of-the-tomb-kings-of-khemri/
The anniversary miniature is a KO hero: https://www.warhammer-community.com/2023/01/02/celebrate-store-anniversaries-in-2023-with-a-kahl-an-admiral-an-anthology-and-warhammer-swag/
Corvus Belli (makers on Infinity) announced they are about to release a fantasy miniatures wargame - "warcrow".
I've not been on the hobby long enough to know whether such competition affects GW in any way, but we'll see.
We have the new Underworlds starter set coming in Q2, where (if rumours are correct) we should get a first glimpse into Malerion Shadow Aelves.
The Adepticon preview sounds like the right time to reveal them.
Cursed City got its own article: https://www.warhammer-community.com/2022/02/27/cursed-city-returns-this-march-made-to-order-for-two-weeks
This is now a made-to-order release but a full release along with expansions will follow later this year.