Interesting article and good technical details.
Here's what I got out of it:
I was a bit surprised at the weight of the E92 335i too. It weighs at 3571 lbs compared to the existing E90 330i ZSP sedan's 3450 lbs. I'm surprised because the sedan has 4-doors vs the coupe's 2-doors, and the new model sports a few plastic vs metal panels. Weight distribution is not as 50/50 as it is with our E90s. It's more like 51.2/48.8 percent front/rear.
This time, Marc Michael Markefka was the exterior designer, not Joji Nagashima. I wonder how Joji feels about the design.
The article confirms what we already know about BMW's usage of two small turbochargers, not arranged sequentially, but in parallel, each to handle 3-cylinders. Their small size probably minimizes turbo lag, and the boost though likely smaller than typical turbochargers, would come on more quickly. Hence, the de-emphasizing of the "turbo" as we have come to expect.
Still, it surprises me that a company like BMW still makes non-equal length exhaust runners with their exhaust manifolds (i.e., surprised they don't make equal length headers stock).