These enhancements for Chrome 9 that are no longer in beta but now deemed stable include support for WebGL, Chrome Instant, and the Chrome Web Store.
It's the stable WebGL support that excites us for the hardware-accelerated 3D graphics in the web-browser via the Khronos specification. WebGL is derived from the OpenGL ES 2.0 specification, which is supported by the main proprietary AMD/NVIDIA graphics drivers and recently via the open-source Mesa / Gallium3D drivers, but that work is still under active development.
With Chrome Instant it's designed to load your popular web-pages as soon as you begin typing or to instantly begin displaying search results as you type, like with Google Instant.
The last big item from Google today is the Chrome Web Store, as the "app store" for the Chrome web-browser for retrieving some web applications. This Google web application store is described in the video below.
See more in the Chrome blog post.