While we know that Microsoft is working on the next major update for Windows beyond Windows 8, there is one website in China that is apparently offering a way to get the next Windows upgrade if you buy Windows 8 right now.
The site is the Chinese-based
Purcell School Pioneer, which worked with Microsoft's China offices to give special software deals for students. In this case, Purcell is promoting a yearly subscription plan that will give students access to Windows 8 Pro for as low "As Low As RMB248". That's about $40 in the US. Here's the kicker. This deal apparently also offers those students a free upgrade to Windows 9, as long as the subscription plan is valid.