The first beta is ready for download and testing, including Xubuntu, Lubuntu, Kubuntu, Ubuntu Kylin and Ubuntu GNOME. There are several updates for every distribution. Weather and Maps apps installed by default on Ubuntu Gnome and KDE is testing Plasma 5 desktop.
The next release is due on September and the release candidate should come on October 16! The final Ubuntu version is coming on October 23, 2014