As is the case for all of the alphas, mainline Ubuntu does not participate, but Lubuntu, Kubuntu, Ubuntu GNOME, Ubuntu Kylin, and Ubuntu Cloud are all taking part. Xubuntu does not appear to be participating this time around, though daily live images are always available.
Utopic Unicorn Alpha 1 includes the 18.104.22.168 Ubuntu Linux kernel.
Kubuntu Alpha 1 includes KDE Platform 4.13.2 released earlier this month. Though the alpha only ships with the current stable release of KDE’s Plasma desktop, you can help test the next generation Plasma 5 from the Kubuntu Next PPA.
Ubuntu Kylin features a number of updates in their Alpha 1 release, including version 2.0 of the Kingsoft KuaiPan client that supports Ubuntu One migration and updated versions of the Ubuntu Kylin software centre and China weather app.
In addition to Ubuntu GNOME, Lubuntu, and the other flavours above, Ubuntu Cloud images are available for those wishing to test out the Utopic Unicorn on OpenStack, AWS, and other cloud platforms ahead of release.
And if you’re raring to try out the latest changes in mainline Ubuntu, you can always give one of the daily live images a spin.
Ubuntu 14.10 Alpha 2 is due next month and Beta 1 will follow in late August.