Normally you’d use canvas for 2D graphics only, but with the recent releases of next-gen javascript engines (Tracemonkey, V8 and Squirrelfish) overall speed got an immense boost, so we’ve been putting some more effort in a canvas based 3D engine.
An early demo of the engine didn’t do any texturing or real user interaction yet, but both of these things have since been added (albeit preliminary), and can now be seen in action in this new flickr-enabled mashup demo. Click any panel to assign a random photo to it.

The Xiph.org Foundation announced the release of Theora 1.0, the open source, royalty free, lossy video encoding format.
As a free video format, Mozilla and Opera have both announced that next releases of Firefox and Opera will support it out of the box. Firefox 3.1 beta 1, released a few weeks ago already include a Theora decoder and can be used to watch video in a handful of sites including Wikipedia and TinyVid.tv.

The Camino team has announced the availability of Camino 2 Alpha 1, the native Mac OS X Gecko-based based browser.
Among its major improvements is the update to the most recent Gecko 1.9 rendering engine (the same used in Firefox 3) with all the performance enhancements.
A new tab overview feature (accessible from the Window menu) displays a thumbnail of all currently opened tabs, similar to some Firefox extensions and a tab preview feature in the works for Firefox 3.1.

This first alpha release is available for the OS2008 ("Maemo") software platforms that runs on the Nokia N810 Internet Tablets. If you're viewing this on an N810, install Fennec.

Fennec (Mobile Firefox) has reached milestone 8 (M8). You can install it on a Nokia N8×0 and take it for a spin. One of the big improvements during this milestone was the addition of several Mozilla QA team members. Fennec is being tested pretty hard now, and by people who love to find bugs. We are finding and fixing lots of issues now. Probably the biggest visible change in M8 is the new theme. It's not entirely landed yet and will likely get some tweaks as we iterate on the design.