Windows 8.1, formally known as Windows Blue, has been announced as a free upgrade for Windows 8 users through the Windows Store. A public preview of the new OS update will be available on June 26th, which coincides with the Build Developer Conference. The new preview will be available for both standard Windows 8 as well as Windows RT.
During her remarks today, Tami reiterated our goal of delivering continual updates to create a richer experience for Windows customers. Windows 8.1 is part of that and continues the journey we first began with Windows 8 last fall. Windows 8.1 will help us to deliver the next generation of PCs and tablets with our OEM partners and to deliver the experiences customers— both consumers and businesses alike —need and will just expect moving forward.