Businesses tend to be a bit more conservative in upgrading their various software systems, and so Windows 10 for Businesses follows a different upgrade path than consumer versions. While the Current Branch for consumers has been pegged at Windows 10 1511 for some time now, the Current Branch for businesses was at Windows 10 1507.
Today, however, Microsoft announced over at the Technet blog that the Current Branch for Business (CBB) will be moved up to 1511.
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