BMW M Performance Parts website is officially up now. Looks like 320d got factory performance kit:
BMW M Performance Power Kit*
BMW M Performance Power Kits further increase the already impressive performance of your BMW 3 Series thanks to perfectly matched software and hardware components. Peak torque varies according to the selected gear. The performance increase, brought about engine data modifications, introduces new thermal challenges. This is why, as well as a new control unit that processes the data, there is a larger intercooler. And only with the Original BMW M Performance Power Kit does the BMW warranty remain unaffected.
For 320d. Increase in performance from 135 kW to 147 kW, increase in torque from 380 Nm to 420 Nm, new engine control unit, modified engine electronics, more powerful intercooler.
Installation duration on request
Available for 3 Series Sedan from 01/12
* Your local BMW Service Partner will be pleased