True, but that doesn't mean it isn't being talked about at all: http://www.webrtc.org/

This is very good, no doubt. But what really worries me is that there has to be a browser engine implementation, different for every browser being used. The devs have come up with the browser engine for Opera, FF but only for the latest versions. And, no one is talking about the great IE's. When I go in a production environment for a product, I cannot really keep a limitation on the browsers/or more so their versions.

Once, this trouble is sorted, WebRTC looks goody.

Talked about != implementation

3D graphics directly in the browser has been talked about for well over 15 years, http://en.wikipedia.org/wiki/VRML for example Java for another.

Here's a very good read (granted, a year old) about Flash vs. HTML5 at Youtube. http://apiblog.youtube.com/2010/06/flash-and-html5-tag.html