This question is about four years early. We literally do not know anything about the next Cyberpunk game other than it is going to happen, it is being developed in America and it will be a mostly new team that CDPR veterans are overseeing.
1. How good/well received will Phantom Liberty be?
2. What will the overall theme and marketing for the game look like?
3. Who will the main character be?
4. What will initial gameplay clips show off?
5. Will The Witcher 4 be a disaster on Unreal Engine? (Assuming it comes out before the Cyberpunk sequel - which seems like a very safe bet)
6. How big of a factor will multiplayer be? Will CDPR's approach stay true to the single player open world experience or will they start to lean more toward a 'GTA Online' type of approach?
7. Will they release other media (TV show, movie, etc.) to ignite more hype for the game?
There are a ton more questions. But there is no way anyone can possibly know this four to six years in advance or however long it is going to be until the next game comes out.
For instance as of right now I would definitely preorder the sequel.
But if Phantom Liberty is eight hours worth of mediocre content, the marketing for the next game looks bad, the gameplay looks boring, The Witcher 4 struggles on UE, if it looks like they are treating the franchise as secondary to The Witcher, if rumors come out about development problems at the new studio and multiplayer becomes a big factor in the game... then I would either skip the game or wait for reviews.