Firefox Beta 4 is now available to download and install on Android and Maemo devices.

The update aims to increase performance and responsiveness, and brings in the Layers framework that improves scrolling and zooming responsiveness. Along with the built-in Firefox Sync, the Awesome Screen, which instantly gives you access to your recent history, bookmarks and tabs just by tapping in the Awesome Bar and support for HTML5.You can check out the release notes for a full list of features included in this release.
You can grab the update from Firefox Mobile. or the respective App Stores.
[...] Firefox 4 Beta released for Android and Maemo [...]