MKMapKit Annotation/Overlay with altitude?

With the updated 3D effects of MKMapKit, is it possible to add an Annotation or Overlay at a certain altitude? Currently they are 'pinned' to ground level.

The MKUserLocation annotation is a good example of a '3D' annotation, as it appears at the users altitude when a 3D map is displayed (example attached).

Dids you ever happen ti find an answer to this question. I am wondering the same.

MKMapKit Annotation/Overlay with altitude?
 
 
Q