Satellite approach and departure procedure.
From what I have learned there is a slow, or very slow, approval of GPS-based app-and dep procedures when it comes to regulatory bodies within the EU.
There is also a lot of discussions about what kind of system to use. ADS-B and mode S seems to be the system that EU will approve. But e.g. Russia wants to have the swedish inventor Håkan Lans system which is ADS-B and VDL mode 4. VDL 4 has the possibility to transmit each and every aircraft's position to other aircraft and to ATC. This is very handy specially in the third world countries who doesn't have to invest in expensive equipment like ILS, VOR/DME and radar stations.
Mongolia has installed ADS-B / VDL 4 and there seems to be a lot of interest in Asia for RNP/PBN.