Does Windows 8 still implement POSIX?

In the Enterprise Evaluation (essentially, a trial version of Windows 8 Enterprise RTM), SUA is still available through Windows Features, though listed as deprecated:

^{Click for full size}

Wikipedia states that it is deprecated in Windows 8 and will be removed in Windows 8.1.

WARNING: SUA is deprecated starting with this release and will be completely removed in the next release.

SUA is being removed from Windows kernel. It shows as DEPRECATED which means this is probably the last version of windows which will support it.

Here is a link that suggests so. http://blogs.technet.com/b/sfu/archive/2011/10/03/installing-sua-components-on-windows-8.aspx