It's the TV Guide interview in the Seattlepi website:
TV Guide: How many episodes do you have left?
Kripke: Christmas will be Episode 8 and we will have four more before we go into repeats. If it ends in December, I think we'll be able to pick back up in January without missing too many episodes, only one or two. If the strike heads off into January or God forbid, February, then we really need to have a conversation about how scaled back the season is going to be.
Interview is itself too spoilery for most folks here but I thought the above information might be appreciated.