No really sure Trigger - I expect that you have seen some of the US posts where they understood that BMW were using up Siemens inventory whilst they waited for Bosch to ramp up production. Have no real knowledge though.
What I do know is that you will LOVE you car - mine is great!!!
E93, Black Sapphire with Cream Leather and Aluminium Trim | Automatic | Pro SatNav | Logic 7 | Bluetooth | Heated Seats with Lumbar support | Comfort Access | Climate Screen | PDC | Adaptive Headlights | Rain Sensor & Auto Light | High Beam Assist |Voice Control | USB Audio | 8Jx17 | Storage | Through Load