Microsoft has been relaying tons of information regarding Windows 8.1 at TechEd 2013 in New Orleans. Among this is native fingerprint support for Windows 8.1. A presentation by Microsoft’s Chris Hallum goes over fingerprint support in more detail.
A build of Windows 8.1 is expected to be made public later this month at the BUILD conference in San Francisco. Windows 8.1 is expected to be finalized for holiday season 2013.