Yeah, for sure. At some point details and/or casting will happen for S3 just as what happened for S2. People will no doubt want a few weeks to talk about the wrap up of the season. When news of S3 breaks, rumors, casting that is when someone should start a S3 thread, imo.
I for one have a friend who DVR's the episodes and he and I only get together about every 6 or so weeks so in my case the season may be over by the time I chime in on S2. This thread is where I'd want to do that.