We've got heated seats and heated steering wheel on the e89. I use the steering wheel heat more often than the seat heater. But we live in a cold climate.
Even in So Cal, the heated seats will be nice to have.
The models and equipment (standard and optional) illustrated in this post reflect my misunderstanding of vehicles supplied by BMW AG to the German market. In other EU member states, the truthyness of my posts may vary. Please ignore this post. Subject to change.