The family of Ubuntu flavors have released their first Ubuntu 14.10 Utopic Unicorn beta.
The usual suspects are taking part in the first beta, including Kubuntu, Lubuntu, Ubuntu Kylin, Xubuntu, and Ubuntu GNOME. As always, the mainline Ubuntu release does not participate in these early testing builds.
Ubuntu GNOME 14.10 Beta 1 includes, as with the previous alpha release, GNOME Shell 3.12 and the addition of the Weather and Maps apps installed by default.
Xubuntu sat out the alphas, but Xubuntu 14.10 Beta 1 is here with theming support for GTK 3.12, keyboard backlight controls through the Xfce power manager, and a raft of Xfce updates you can find in the official announcement.
With the first beta of Ubuntu 14.10 here, the next release will be the final beta tentatively due on September 25, including the first beta release of mainline Ubuntu. A release candidate should drop on October 16, just ahead of the final release of Ubuntu 14.10 on October 23.