Installed 2.0 Alpha1 on Xenial and imported only Xenial and therefore used Xenial as the release for commissioning.
When attempting to enlist nodes, they appear to not find a kernel and fail to boot. Please see the attached screen shot from the console. The Xenial image used was imported from http://maas.ubuntu.com/images/ephemeral-v2/daily/ on March 14, 2016.
||/ Name Version Architecture Description
+++-===============================-=============================-============-=============================================
ii maas 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS server all-in-one metapackage
ii maas-cli 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS command line API tool
un maas-cluster-controller <none> <none> (no description available)
ii maas-common 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS server common files
ii maas-dhcp 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS DHCP server
ii maas-dns 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS DNS server
ii maas-proxy 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS Caching Proxy
ii maas-rack-controller 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS server cluster controller
ii maas-region-controller 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS server complete region controller
ii maas-region-controller-min 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS Server minimum region controller
un python-django-maas <none> <none> (no description available)
un python-maas-client <none> <none> (no description available)
un python-maas-provisioningserver <none> <none> (no description available)
ii python3-django-maas 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS server Django web framework (Python 3)
ii python3-maas-client 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS python API client (Python 3)
ii python3-maas-provisioningserver 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS server provisioning libraries (Python 3)
To reprodice:
1. change streams to daily
2. import xenial (only)
3. try to enlist, it will fail - no-such-image
4. Go to the settings page under the commissioning section, Xenial will be selected by default *already*. Click *save*
5. Enlist again and it will work