Close enough for most people, but no. Based on their latest update[0], at the minimum it'll be missing attribute expression SFINAE, an unfucked preprocessor, and unfucked (C++98) template name lookup. If you're feeling charitable the latter two could be called bugs rather than missing features (and bugs that will break a bunch of existing code when they're fixed).

[0] https://view.officeapps.live.com/op/view.aspx?src=http%3a%2f...