To increase the FC8 compatibility with most recent mini-ITX motherboards, Streacom is now shipping the case with a brand new set of heat pipes. The SH2 kit is also compatible with their HT4 thermal riser when components are blocking the path of the heat pipes.
Overall a good thing for temperatures too, since a CPU closer to the main heat sink and shorter heat pipes means greater cooling efficiency.
Source:
Streacom