Until recently it was assumed/guessed that the reasons the US had voice and the EU did not was because either there was some 'legal' reason or that the EU English voice was too tough to recognize due to various accents.
With the release of the F90BT unit (with EU English etc voice control) there are no longer any reasons for Pioneer to deny us (F900/F910 owners) voice command ability yet they still do 
Anyone working on lifting the code from a F90 to see if it can be implemented on the F900/910 ?