Carina MacKenzie has shared some of her recent interview with Jared and Jensen.  Jared talks alot about Sam's issues in next week's episode while Jensen talks about the season so far.  Slight spoilers in here, but not a huge giveaway.  Sound like episode 7.17 is going to be Sam heavy.

blog.zap2it.com/frominsidethebox/2012/03/supernaturals-jared-padalecki-teases-sam-heavy-episode-jensen-ackles-talks-bobby-and-the-impala.html