Why? Because it is strictly speaking not even a bug - but I consider documentation to be part of the software, so wrong documentation is just a special kind of bug. I take it you know (or have heard about) MS-SQL Server? I certainly have because I have grown very fond of it and use it for just about every data solution I build or maintain. Upon reading up on (i.e. refreshing my memory) the 2012 specific features I used the feature comparison chart MS offers to potential customers. May I point your attention to this list here. At the time of me writing this (June 1st, 2013 1800Z) there was a feature listed called "Web services (HTTP/SOAP endpoints)" - and some editions showed a "yes" for it. Now that struck me as odd because I knew that it had been new in 2005 and already deprecated in 2008. So, I took alook at the API documentation - notice the little "Note" about the XML Webservice endpoints no longer being available in 2012? :D
Seems that somebody forgot to update the feature map. I now wonder what else on that map is wrong... I mean: people use that table as a basis for investment decisions! Even experts do sometimes becaues it is impossible to memorize all of it.