As I understand, Road Trip is scheduled instead of the third state of this year — only Illinois and SD, while BC is planned for early 2027.
That was my understanding originally, but Nemiro seems to be hinting that BC could come out this year too. That is really a tight schedule. I'm not sure that makes proper money sense to them. It might be too much in one part of the year. People will only choose to buy certain DLCs. A lot of us will buy them all, but some people won't.
There is also GTA VI coming out this year which will take away money as well. GTA VI is what makes me think Road Trip (the free DLC) will be their "third state."
But again, Nemiro is really pushing British Columbia.