Web developer site-building tools are only sexy to developers, but they get a big makeover in today's update to Firefox and that will affect how developers connect to the people who use their sites.
Also on the code side of things, Firefox 10 has added support for CSS 3D Transforms and for anti-aliasing in the WebGL standard for hardware-accelerated 3D graphics. These updates mean that complex site and Web app animations will render more smoothly in Firefox, and that developers can animate 2D objects into 3D without plug-ins. You can read the full release notes for Firefox 10 here. Mozilla also has released the enterprise version of Firefox, which will release on a slower cycle so that businesses don't have to worry about their internal tools and security protocols accidentally breaking. Firefox 10 for Android makes some small tweaks, mostly to support anti-aliasing in WebGL and accelerated layers in OpenGL. This means you ought to see the Web render just a bit faster. Firefox Sync is also easier to set up now. You can read the full release notes for Firefox 10 for Android. Assuming Mozilla keeps its release schedule, which it has done since moving to the rapid-release cycle last March, Firefox 11 will see the release of the significantly faster native Android interface.