The problem is, there's no news. The article says that IE10 is only available on Windows 8, which accurately reflects the state of the art. Any inference on its availability on Windows 7 later on is just speculation. Which is legitimate, of course, just not news.
IE10 will only be on Windows8. It is too heavilly tied to the Windows8 security and UI model to be trivially back-ported to Windows7, and that won't happen under Sinofsky's watch. His management style is to put all available resources into making the next version of Windows more marketable rather than giving out freebies to existing Windows customers.
It's kind of evil, but from a business perspective you can see why they're doing it.