They will be testing new aero-parts on the B-spec in Abu Dhabi:
http://formulaspy.com/news/formula-1-ne ... dhabi-7767
The car has been fast tracked, and 2015 aerodynamic ideas will also be trialled on the car during practice after Aerodynamics Head Peter Prodromou asked Boullier about the possibility. Sky’s Ted Kravitz says:
“At the moment, they are just going to test it on the Friday, but it’s a completely new concept which the wind tunnel is already saying will be better than this year’s car.”
Like other's allready mentioned; I doubt they'll be testing or using any new aero-parts today, since the primary goal will be to make sure the engine runs smoothly. But I do expect some new things in Abu Dhabi!