Dear all,
I've gone through the high-level list of change areas / projects from Rel-4 through Rel-14 and collected a list of those parts that seemed like they could be interesting from an Osmocom point of view.
In case you're curious and enjoy reading 3GPP docs as much as I do, feel free to check out http://projects.osmocom.org/projects/cellular-infrastructure/wiki/Interestin...
Some parts were just recently mentioned, like Extended Uplink TBF, Network Assisted Cell Change, MNCC-SIP interface, Local Call Local Switch. We also already knew about the "Real" A-over-IP specification (different from the SCCPlite A interface that OsmoBSC implements), and A5/4.
There's quite some other interesting bits and pieces, such as for example the feasibility study on GSM/EDGE BTS power saving, where they propose (it's not accepted yet) to reduce the transmit power on the BCCH-carrying TRX at certain points in the time multiplex.
Enjoy, Harald