Does anyone know when season 5 will be out on DVD?

Ummmm well first off it wont be probably until september of 2011 because season 5 has not even been on TV yet unless your meaning season 4 on dvd and made a typo if so season 4 should be on DVD fall 2010 they usually release the 前一个 season about a week 或者 two before the new season starts on showtime.