[=;409611]
what is so lifethreateningly important that development can not continue with 2013.
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Not life-threateningly important I would say, but here is an impressively long list of updates, fixes, and additions to C++ in Visual 2015:
://blogs.msdn/b/vcblog/archive/2015/06/19/c-11-14-17-features-in-vs-2015-rtm.aspx