Same here. The HD page for season 5 is gone on iTunes. All the previous 4 seasons are still up in HD and since there is nothing in the news I'm guessing it's just the usual unreliable service I've come to expect from iTunes. I have multiple season passes every year and something always goes wrong with a few of them. Hopefully we'll get an email soon apologizing for the disruption of service and a credit for some free videos.