I asked my sales guy about sat nav updates. Said every time it's serviced or comes in they will do updates.
Not sure if its true though, one of those sales done now, he'll say anything to keep me happy including not mentioning future costs.
I've not gone into too much detail about new sat nav. But someone summed it up as functionality wise it, not that different. But hardware wise quite a difference.
Nice to have the new one obviously but When ur driving I dont think u'll mind much.
330D M Sport Estoril Blue 19" + M Sport Brakes, Adaptive Suspension, HK Sound, HUD, Stop+Go, Vis Pack, New Pro Nav.