detailed Carrier USS Harry Truman and escort group, with many animated elements, using experimental wave motion ( edit - Well done Timi Hietanen you got your wave motion noticed and used in a core release )
C++ versions of props.nas setValues/setChildren() Improve performance of Nasal properties access by implementing the setValues/setChildren props.nas functions in C++ 
Multiple flightplans fixed and is now possible to be controlled from Nasal. See Nasal_Flightplan.
Starting on carriers fixed
Simple API to add addons to FlightGear without the need to mess around with FGData/Nasal or FGHome/Nasal directories.
new Mediterranean tree textures, new desert shrub textures
Support for AI wake turbulence added. (a small code snippet needs to be added to the plane)
Volumetric grass effect utilizing a geometry shader, based on work by Fernando Garcia Linan
Helicopter rotor wash effect for volumetric grass and water shaders
consistent snow implementation for OSM roads and buildings
directionally visible car lights for the OSM traffic shader
I had to go back over the flightgear-devel mails to see whats been implemented for the aircraft wake (I remembered seeing it & thinking it was cool):
- no changes required on Yasim aircraft as it is added to local wind
- small change required (external force) to JSB aircraft
- it reads parameters from the performance db for AI aircraft & the wing geometry from the jsb config