This will be the first Proleague iteration that will not feature BroodWar and CJ Entus will be looking forward to defending their title entirely on StarCraft 2 ground. The tweet also speaks of "some shocks", leading one to speculate about possible changes to format or even updates to the established eight-team line-up.
Wish I could say more, but all I've got for you right now is that OGN Proleague is starting in December. Prepare yourselves for some shocks.
— erik lonnquist (@ggDoA) November 22, 2012