I think that's pretty much what they will do. The last season was all a dream or something like that. I've read before that the show was supposed to end one season sooner but the studio insisted on going for one more so Rosanne decided to just go wild and crazy for the last season.
I'm looking forward to the new season but I'm curious if they'll address the 4th kid Rosanne had in season 8. Haven't read anything about him. I remember they named him Jerry Garcia Conner.