There's a few reports around, but I thought I'd share mine here to avoid having to scroll through a thread for pics.
This is the nicest, most well built Military I've yet encountered. The blade is ground nice and thin, feels a little thinner than my previous Millies. Haven't mic'd it, but someone else said it was .020", which I consider to be about perfect for a knife like this.
Lock up is perfect. Full engagement of the liner, while still engaging early on the tang.
The new stepped stop pin. I think this is an excellent change. Anyone who's assembled many knives knows just how particular that stop pin screw can be in determining the blade's action. This removes that from the equation.
I was very surprised when I realized that the lanyard tube, while it has been enlarged, is also now stepped. I view this a big improvement, as the flared tube was always an issue during disassembly/reassembly previously.
The pocket clip has been updated to the 'spoon' profile, and this makes a huge difference for me in hand. The Military handle is great, but that clip always was a hot spot for me. No longer, as I can pretty much ignore the clip now. Huge, huge difference in comfort for me!
The stepped pivot, as first seen on the BBS CPM-S90V smurf blue Military is also seen here. Again, a welcome change. This pivot acts like the pivot bushing on Sebenzas and should ease reassembly dramatically, due to not having to tweak the action to get it just right. As a side note, the action on this Military is absolutely spot-on perfect. The blade is ever so slightly off center (doesn't matter to me) and the action is excellent. Very, very smooth, while having ZERO blade play. The action is very smooth without being 'floppy.' The blade is juuuust shy of falling shut when I release the lockbar, but I'm sure with a good relube and a little bit of carry and use it'll be there. I'm extremely impressed with how tight the lock up is in relation to the smoothness of action, far better than any other Military I've handled.
And the backspacers. Not a huge issue to me, but the upgraded larger hardware is a welcome change, and I always enjoy being able to rinse the knife out easily. Also, when reassembling, the knife should stay true easily, as 3 of the 5 connection points between the handles are stepped and therefore machined to a specific width. The knife should have an even stronger build than previous incarnations of this model, as the handles are compressing against those stepped areas, as opposed to relying on just the screws.
All in all, I agree with everyone who's said that this is the best iteration of the Spyderco Military yet!