GS staff quote:because valve screwed up so using Steam cmd it will always say your server is out of date please update it will never do it right. if you need buy a new server and have the game company apply it with valves new binaries
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system= the binaries for the servers meaning that our servers are outdated and steam cmd cannot properly update them you just have to get a new server with the binaries pre installed or use steam cmd in windows servers
And if you have trouble with the steamCMD then report it on their github page... or it won't come out.Feb 15, 2013 - 1:32am EST
There is an integration issue with this latest update. This is preventing us from applying the patch globally. We are aware of the issue and are working towards a resolution. We will provide you with more updates regarding this issue when they become available. Thank you for your patience and understanding.