At the moment there are no plans to support this piece of hardware. They seem hard to get as well, so first of all we need to get access to such a machine. For now the focus is on more capable hw.
They sell on eBay all the time for cheaper than Mac Minis so there are tons out there for sale cheap. But yes, it is older and slow than minis so I do understand. Would be cool though. An MorphOS Cube.