You're right, but I was always under the impression that the sequel of cyberpunk would be in Arizona and follows V's story there, also it would be difficult to do this dlc for the people that doesn't really see the panam ending as canon at least in regards to continuity.
It's definitely a possibility that whatever would be the cyberpunk sequel would follow a completely different protagonist though.
We can only hope. The Aldecaldo ending would be my preferred continuation.
But I think the areas surrounding NC (and inside NC for that part) will be fleshed out by DLCs or expansions.
Realistically, IF there's a story continuation happening in Arizona, I guess it would be either an expansion later down the road, but more likely Cyberpunk 2078.
Of course, I hope for both. Several expansions and continuation of V's story in sequels.
Been a long time since I've had so much fun and been this excited for a game, good times.