Yes, it is still banned. But for some applications, it is allowed to use Windows 8/8.1.
non-overclockable notebooks may be used in combination with Windows 8
3DMark and PCMark runs on Windows 8 if an ORB Link is included, and SystemInfo 4.20 (unofficial download) is used.
Intel XTU from v4.2.0.8 and up
(http://hwbot.org/article/general_rules)