The 10-speed is going to be the same joint-venture GM/Ford 10-speed that is used on the ZL1, 2018 F-series, 2018-up Mustang GT, etc... The Chevy version shifts faster than the McLaren's automated manual. I heard the Mustang GT's 10-speed auto (the interweb users seem to refer to it as the A10) has some quirky delays with the stock tune. But so far that thing has been a beast in terms of handling high amounts of torque/abuse without any issues. Going to this 10-speed and RWD system means the "AWD" SUVs/cars may get a much better transfer case instead of the mediocre PTU unit with 4 oz of gear oil that gets cooked, and possibly better fuel economy by disconnecting the front axles completely. We have a viscous coupling RDU that I suspect still robs quite a bit of power even with no power going to the back wheels due to the mass of the driveshaft and viscosity of the coupler fluid.
On a side note, my SHO came with 255/45R19 tires (on 19x8.5 wheels) and I was able to install 275/45R19s last year without any issues. Those tires were beasts. Superb lateral grip, awesome ride quality, and they were so wide that most of the small potholes didn't even register. The Fusion Sport has 235/40R19 tires that pop in the slightest bump, and there's not enough room to go with a thicker tire due to the spring perch clearance on the strut. I lost 2 tires already this season! I see that they have an Edge ST coming out that will have the same problem wit ultra thin tires. The 2020 Explorer will have a ST trim as well, so I will definitely not get that. The problem is that they load the Sport/ST trims with the best tires for the Autobahn or Nurburgring. When I complained to Ford, they said they designed cars for all kinds of roads and not just Southeast Michigan. Uh, what? We have some of the worst roads here especially this winter, with potholes that are waist-deep (literally, not making this up) or 3 feet wide on the freeway. Several roads had a line of 15+ cars all with busted wheels/tires lined up on the shoulder. I'll gladly sacrifice a few G's of lateral grip for better durability on rough roads.