A version of Fennec suitable for Windows Mobile is also in the works, but isn't quite ready for public testing yet. The mobile browser is built from the same Gecko code base that drives the also-under-construction Firefox 3.1, which hit Beta 1 earlier this week. It includes touch-screen support, a password manager and pop-up blocker, offers a tab-browsing interface, and the same “awesome bar” functionality found on its desktop counterpart.
Mozilla is pitching the alpha as an early developer release suitable for testing purposes only, but if you are the adventurous type when it comes to new software, head over to Mozilla's web site to grab a copy of Fennec Alpha 1. Full release notes are available here, along with a wiki on the mobile project.