We periodically release updates for Windows to include new features, the latest
security protection, and the best drivers and software. Windows 8.1 Update and ...
Learn how to check for, download, and install KB2919355, the latest update for
Windows 8.1 and Windows RT 8.1.
Learn how to update from Windows 8 to Windows 8.1, or Windows RT to
Windows RT 8.1 via the Windows Store.
Get answers to questions about updating to Windows 8.1, including system
requirements, how to upgrade, and what files, settings, and apps you can keep.
Get additional help with updating your PC from Windows 8.1 Preview and
Windows RT 8.1 Preview to Windows 8.1 and Windows 8.1 RT.
Get Windows 8.1 now for better search, more apps, and more ways to make it
yours. ... Update to Windows 8.1—it's free. ... Update now to Windows 8.1 for free.
HP offers a Windows 8 upgrade to Windows 8.1. This page provides an overview
about the Windows 8 upgrade for HP PCs.
Microsoft is working with phone manufacturers and mobile operators around the
world to make the Windows Phone 8.1 software update available to phones ...
http://en.wikipedia.org/wiki/Windows_8.1 - 11 hours ago
However, unlike previous service packs, Windows 8.1 cannot be acquired via
Windows Update and only accepts 8.1-specific product keys. Released as part of
The Windows 8.1 update adds significant changes to the operating system's
interface that will make it easier to use on desktops.