@MrGoodCat You are correct sir! Oct 6th for online and telesales, Oct 20th for retail:
http://www.mobileburn.com/news.jsp?Id=7930 (via your Engadget link)
@Laos101 When is your 1 or 2 year upgrade happening? Call up telesales, most of the time you get an agent who can push the date up 5-6 months. There is a $20-25 early upgrade fee though.