Yep, I would also be very keen on any news on this feature for gpsapp.

If anybody works on it please remember that the Germans swap directions and instructions, e.g.:
Turn right = rechts abbiegen
Bear left = links halten

So samples should not be contructed word by word ("turn", "right", ...) as this would be difficult to translate (gpsapp would need to swap the order) but instruction by instruction ("turn right", "turn left", ...) to be easily translatable.