A press conference headed by GOM, Blizzard, OGN, and KeSPA is about to take place in Seoul.
The conference will discuss the transition of OGN and KeSPA from SC1 to SC2. This is a big freaking deal. Without the BroodWar-related work of KeSPA, OGN, and MBC over the last ten years, the SC2 competitive scene would be a shadow of its current self. In fact, Blizzard would probably not have designed SC2 to be a competitive title had BW not had such a healthy scene in Korea.
You can follow  TL's live report twitter account for updates, or you can refresh this thread. I'll be updating as much as I can.
EDIT 1: It starts at 10:30 AM KST, apparently. That's 21:30 Eastern or 03:30 CEST.
EDIT 2: "Boxer, Flash, Bisu, DRG, MKP, Leenock, Jjakji, Nestea, etc all present" -- TL
EDIT 3: "This event will be hosted by OGN Caster Ms. Jung and GomTV Caster Mr. Chae" -- pgr21/ESFI
EDIT 4: The event has begun.
EDIT 5: "KeSPA and OnGameNet have received official licenses to run and broadcast SC II leagues. SC II is now an officially recognized kespa game. KeSPA, Blizz, Gom, and OGN have agreed to work together to help SC II esports develop in Korea, etc etc. Next season of PL will have SC2. No official word on mixed with BW, or just SC2." -- TL
EDIT 6: More concrete information doesn't seem to be forthcoming. edit: OK, I was clearly wrong about this.
EDIT 7: "KeSPA rep speaking now. I think I read "BW + SC2" hybrid in betwee the lines, but I could be wrong" -- TL
EDIT 8: Flash: "I wish for the global fans to give support to us SC1 players so we can bring our best games."
EDIT 9: SC2 Licenses have been extended from Blizzard to all parties.
EDIT 10: This OSL might not be the last BW OSL.
EDIT 11: Proleague next season will be hybrid BW/SC2. The season after that will probably be pure SC2.
EDIT 12: KeSPA: "We will look into how to integrate the Gom/GSTL teams for the all SC2, October season of PL." -- TL
EDIT 13: OGN: "We're preparing foreign broadcasts for SC II, as we've done for other game leagues (League of Legends)"
EDIT 14: Estimated start time for OGN's SC2 league is early July.
EDIT 15: OGN: "We haven't been able to talk to Gom in detail about cooperation, but we're going to talk soon. Though they're gone now, MBCGame helped us become who we are through competition and cooperation."
EDIT 16: Rights to broadcasts will be held by the individual broadcasters.
EDIT 17: You'll be seeing ex-BW pros playing SC2 in the third week of May. That's when the hybrid Proleague will start.
EDIT 18: Boxer asked a question. "Esports was too focused in Korea for the last 10 years, which limited it. Korean players need to go abroad more and compete internationally for esports to grow in Korea. What is KeSPA going to do to support this?" Answer from KeSPA: "The main reason we switched to SC II was to put Korea forth as the motherland of esports. We're working at cooperating with various international leagues."
EDIT 19: Tentative OGN plan is to have KeSPA league, GSTL league, and amateur players compete in the July OSL.
EDIT 20: KeSPA is being asked a question about the KeSPA-like organization that has popped up for the GSTL teams. Will KeSPA work with them? I'm not going to read the answer that KeSPA gives to that question. The real answer is "We will crush them utterly."
EDIT 21: I suppose this means that Moletrap will be commentating SC2 games for OGN. Torch too?
EDIT 22: Show's over.