According to Osen, KeSPA is considering having both Starcraft 1 and Starcraft 2 played in the 2011-2012 Season of the Proleague.*
The article states that KeSPA underwent some internal restructuring earlier this month, and though they have not talked to Blizzard or Gretech about the details, they are considering an option to play both Starcraft 1 and 2 in the upcoming season. If Starcraft 2 does happen to be introduced into the Proleague, it may be introduced towards the middle of the 2011-2012 season.
The article also states Pro-gaming teams are starting to think more realistically about Starcraft II, upgrading their computers to be more suitable for Starcraft II, and also testing Starcraft II internally.
When asked for comment, an anonymous KeSPA employee answered that "it is true that we are considering it, but nothing has been confirmed. We will try to meet the expectations of e-Sports fans through continued negotiations with Blizzard."
*KeSPA is the governing body of the Korean e-Sports, and is in charge of running the Proleague, Brood War's premiere team level competition that has yearly seasons similar to pro sports leagues around the world.