I have just returned from the showroom. The new Z4's boot is less practical than old model's. The floor is not flat. You cannot really fit a proper suitcase if you want the roof down. Even with the roof up, a normal suitcase will be just enough to fit in.
Local dealer only has one Deep Sea Blue 35i with multi-spoke wheels in the showroom, and it is not available for test drive until Monday. Salesman said no discount can be given to customers. If new car is ordered now, they can give you the 5-year servicing and BMW Driver Day. I think after 6 month, BMW have to offer discount and attractive finance deal to get people buying the new Z4. No current Z4 owners will rush to buy.