title: What CLR is needed for C# 6?
body: <p>The title says it all: what CLR version is / will be needed to run C# 6 programs? The CLR version is interesting to find out the system requirements and supported operating systems.</p>
  
  <p>I googled <a href="https://www.google.de/search?q=clr+6+.net">[1]</a> <a href="https://www.google.de/search?q=c%23+6+clr">[2]</a> and had a look at <a href="http://en.wikipedia.org/wiki/.NET_Framework">Wikipedia</a> and <a href="http://msdn.microsoft.com/de-de/library/bb822049%28v=vs.110%29.aspx">MSDN</a> but could not find the information.</p>