For people experimenting with these new concepts and feature... I picked this item up recently.
If you are trying to make things work and running into problems make sure the Adaptive Component (AC) is hosted on nodes of a divided curve or divided surface. It can easily appear like its hosted correctly, but if you look closer you may find it is actually hosted to the curve, not the node. Also, if your AC family contains any Shape handles points, then it won’t repeat. All adaptive points in a family must be Placement points, not Shape Handle points or Reference points.
Read Andy's recent post about experimenting with them.