It looks like the WebRTC Object API might happen for IE13, but no support for the full API is planned.

It looks like IE12 should have the Audio API and getUserMedia, though. That lets you do some interesting things with audio, at least.

I wish it did. I'd also like file API and directoryReader support, and the web audio API. The truth of it though is I don't care anymore if someone's browser doesn't have WebRTC. If you don't have it my site won't work for you, tough luck. WebRTC capable browsers are available on every platform. IE and Safari (on a mac) are like the shitty bundled browser you have to use to download a real browser at this point. Firefox, Chrome and Opera have all this stuff, except Firefox doesn't have directory uploads :(

if you take a look at http://status.modern.ie/ you can see which major standards / features are in flight. or not, in the case of WebRTC