Windows RT 8.1 Preview and Windows Server 2012 R2 revealed in leaked code

While Microsoft is preparing to unveil a public preview of Windows 8.1, it looks like Windows RT and Windows Server 2012 users won't be left out of the new upgrade cycle. A recently leaked build of Windows 8.1 has revealed references to a Windows RT 8.1 Preview and Windows Server 2012 R2 in the code of some files in the operating system. Microsoft is understood to be preparing a "Blue" update for its Windows range of products, so this naming is consistent.
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A Guy