Microsoft released the IE10 Preview yesterday, so today Mozilla fired back with a preview of Firefox 5.0! They also announced a new release build series called Aurora that now bridges the gap between the nightly test builds and the beta test builds. Mozilla says that Firefox is moving to a rapid release development cycle to deliver new features, performance enhancements, security updates and stability improvements to users faster. You can grab the Aurora build of Firefox 5.o here
Today, we launch the Aurora channel as part of a broader initiative to create channels which deliver features to users at various levels of quality and polish. The Aurora channel is where users can test the latest features and innovations. Users can expect an increase in polish from the raw, cutting edge features in our nightly builds. Aurora releases may not be as stable as beta or final releases.