After a certain number, a sequel is foregone conclusion. Rocky IV assured Rocky V. Jim Bob and Michelle Duggar's 18th baby guaranteed a 19th. So an announcement of an announcement about a possible Street Fighter sequel is not stop-the-presses news.
Still, the Japanese Street Fighter IV official blog promised last week that they'd speak about a sequel this week. The writer came back and instead said something about promising there'd be more concrete information in the near future.
Some take that as confirmation a sequel is in the works. That would not necessarily mean Street Fighter V. It could be Super Street Fighter IV Tournament Turbo Alpha EX or something. Regardless of what it's named, any new game brings up discussion of what characters will or should be included. Which you are free to do now.