This bracelet is available for the new classic Mark XVII and Fliegerchrono (Ref. 3777) as well as the new Spitfire models. It's just slight more costly than the prior bracelet, and really nice.
First, there's a micro-adjust system:
It's the same system as used in the Da Vinci bracelet; you push on the buckle in one place and can move the bracelet by each of the notches.
Second, the construction is different. There are no notches on the sides of the bracelet, which now is smooth. Instead, the pusher indents are on the inside, and only one needs to be depressed. Then the bracelet can come apart as shown here:

Nice, really nice...both the engineering and the look.