Here are the major new additions to Windows 10 due in the Anniversary Update. The detail of what will be included in the free update - due to drop on August 2nd - is already known, as early versions have been available to testers for some time under the Windows Insider program.Ī gallery version of this article is available here. The Windows 10 Anniversary Update will add a variety of features to the OS, as well as extending and fixing what's already there. Microsoft is marking the first birthday of Windows 10 by giving the OS a major upgrade.