And LXD 0.14 is out!
This release brings a lot of polish to some recently (and not so recently) added features. But more importantly, it also finally brings support for the official Ubuntu Cloud images. At this point, this is limited to wily as we're waiting for images to get published for the stable releases, but it should only be a matter of days!
For those who were waiting to use LXD with cloud-init, you can use LXD 0.14, import official cloud images, either yourself or import the latest through the helper script "lxd-images import ubuntu".
Then create your containers, setting the user.user-data config key to your cloud-init metadata. This will be fed to cloud-init and processed as it would in the cloud.
Note that while this is all working, things will get ever better when cloud-init's /dev/lxd support lands and when we add background sync support to lxd-images (so your images are always fresh) but all that is for a later release.