Either HTC's Twitter account is drunk and spouting off random timeframes, or HTC and Sprint are really in no rush for to update their HTC 8XT, a custom phone that looks like a cross between the HTC 8s and HTC 8x.
Asked about the Windows Phone 8.1 update, and presumably not the capital 'U' version aka 8.1.1, and HTC responded to Aaron B. on Twitter with the succinct "You can expect the Windows 8.1 update to roll out to Sprint's HTC 8X in November." Note not by November, but in November.
Full story from the WPCentral blog...