This years mission seems to be involved around exploration of Venus.
OSIRIS-REx will probably commence its mission to explore and collect samples from asteroid somewhere in 2016.
Therefore, it is essential that the probes sent on Venus should reach its lower atmosphere.
Thus VAMP seems to be the most apt candidate that can fulfill the required criteria as of now.
However as per SpaceNews there are a lot of hindrances in achieving this mission.
Says Dan Leone from SpaceNews: Neither VAMP nor anything like it has ever flown.
Also it seems the aircraft would carry instruments that would add around 440 lbs (200 kg) weight.
These instruments would include cameras and atmospheric samplers.
At the mentioned levels even the temperature is about 15 degrees Celsius.
Polidan told the SpaceNews: Not a whole lot different than flying on Earth.
Hence in any case whichever mission is picked up in the competition it will be launched in 2021.
source: www.techworm.net