Apart from building systemvms, we also have some code that should build us devcloud and base boxes for development. The proposal is to fix/refactor devcloud appliance building scripts from tools/devcloud/src to tools/appliance. The next proposal is to create a new devcloud that has all the build tools, IDE and possibly a lightweight desktop environment or tiling window manager. Next, also build 64-bit systemvm template appliance and modify a jenkins job to bake daily builds of all of these appliances. From my side they all will be based on debian rc1 wheezy (yes, wheezy rc1 is out :), build automation will help us in long term.
Regards.