A wander up pit lane at the Sachsenring shows teams and factories still hard at work trying to figure out ways of going faster. Here's a quick note of the things I have seen so far, with a few very poor photographs.
The Barcelona test proved to be a chance to try out new aerodynamic packages, and some of those have made an appearance at the Sachsenring. On Friday, Maverick Viñales spent most of the day on Aprilia's new fairing, with Aleix Espargaro following suit today.
As you can see, the lower part of the fairing is wider, creating a ledge around the middle of the bike. That should bring the side of the bike closer to the asphalt when the bike is leaned over and create something of a ground effect. It also provides a certain amount of downforce at a very useful point, close to the center of mass.
The fairing redesign does have a disadvantage, however: the neat sliding hatch on the standard fairing where the starter motor engages has been replaced with a latch.