ICOM have recently uploaded a video to YouTube about the Icom IC-R8600 Wideband Communications Receiver. The video shows Bob McCreadie (G0FGX) of TX Films giving an overview and demonstration of this receiver's extensive range of features.
It looks like a serious piece of kit with a price to match. It currently retails for about £2500 / €3000.
One serious drawback seems to be the fact it isn't able to decode DMR or Yaesu System Fusion signals.