Windows 8.1 has been in public preview for the last several weeks and with todays announcement, the final build will be shipping soon. October 17th to be exact. As Microsoft has confirmed before this is a free update for all existing Windows 8 users and will be available via the Windows Store. From the 18th onwards, Windows 8.1 will be available at retail and on new shipping devices. Hopefully this means that a Surface refresh is right around the corner as well.

Via: Engadget