C182 / SMA Jet Fuel Engine?

Is there any information available about the new SMA jet fuel engines
that are being offered for the C182?

I'm curious if maintenance would be much of an issue. Are there many
shops that can handle working on them?

Is it a replace only like the Centurion 1.7 on the Diamond airplanes?
Or can it be overhauled to get flying again?

Cost for an annual?

How would they perform at high altitudes? - Colorado rockies region for
example.

Any way lots of questions so if any one knows where I might be able to
find information it would sure be appreciated. I've already checked the
www.smaengines.com web site and it is just a little light on
information.

Thanks