the engine chip, exhaust and bodykit upgrades are not available in the US until Q2/spring next year. However, you can upgrade the grille, pedals, mirror caps, and carbonfiber shifter now with the official bmw m performance part number.....ask any dealer or go online to a bmw online store such as bavauto, bimmian, or even ebay you will find some dealers selling these parts.
I have heard they are avail in canada with the factory build....but who knows....im not so sure about that.... I think they are waiting bc the m4 will not be available for order until around then is my best guess