Google's ANGLE project, launched today, will allow their Chrome OS to be able to access graphics hardware using the OpenGL ES 2.0 API. What this means to you: 3D graphics in your browser!
So ANGLE, which will get Chrome (and presumably Chrome OS) use WebGL, the "cross-platform web standard for accessing low-level 3D graphics hardware", will be mostly for Windows, because Windows can't run WebGL without OpenGL drivers installed. OS X and Linux can, because they already use OpenGL to a larger degree.
The main point is that with Google putting so much development emphasis in the browser, the ability to have 3D acceleration on all platforms means it's much more viable to get richer (desktop-like) apps in there. [PCWorld]