Here will be temporal words(and just consider expert scheme opinions from me):
I found similarities with AC4 because I thought it will feel too arcadish(AC by default are arcadish but not as mush as After Burner for example), but It doesn't, I played AC04 recently and it feels almost the same, same pitch,roll and yaw ratios(maybe a bit too stiff but not as stiff as AC6), there is also the acceleration which is now more severe and is hard to stall on this game, the aircrafts seems to be too quick.
Now, regarding the new CRA/DFM system, it works better than I expected, specially with expert controls as I was mentioning before, it eliminates the tedium created by the "eternal looping" as I called it since the introduction of High-G turns in AC6, I forgot to mention that the High-G turn is present as well(which is something I truly hate, hence the reason of the eternal loops),DFM is basically minor tweaks in aircrafts direction, trajectory and missile timing which are well planted, is all about time, but something that bothers me is the scripted paths that aircrafts seems to do(Middle city-> Coast) which I found a bit annoying.
Generally the game looks incredible, the brown-ish style is more aesthetic which is to blame to MW games and so on, however in this game it fits, specially when you see the opponent disintegrating in a million pieces. There are a lot of nice details in the aircraft models, like for example the F-22 weapons bay and the detail on the missiles, the details on the city look incredible(even for a moded flight simulator) and the lighting works beautify.
Apart from that, the enemy seems to be different, they also counter manoeuvre missiles while on CRA(which is nice) and they do CRA on you(which is not nice), there are now flares which I like and dislike, they work best if the health doesn't recover(but sadly it does), sounds are absolutely nice and the new TGT_LEAD seems to be a nice middle term from standard enemies(although they are more like a CRA plane). And that's what I've been piling up from the Miami mission, which I like and I do believe that the Akula will be a promising enemy, I expect great things from it.
I haven't play the Heli mission long enough, there are a couple of control schemes and I found the second scheme a bit more "manageable"(doesn't feel like a floating camera, that is my gripe with the Heli mission). Same applies, nice graphics, surprising attention to detail on the ground but too arcadish controls, the level feels a bit weird and the intercom is just pure COD thing(but it fits the style), the heli dogfighting is nice but I haven't played that much so I cant give you more details about it, however I like that dogfighting model.
And that's the big picture I have stock up thus far, I need to play more the Heli mission, but there is also a bunch of tec demos that I'm studying, that is why I got cut from analysing the demo and giving my thoughts, here is one of the
tech demos if you are interested(an early prototype of the game which really looks promising, jump to 3:13 to see what I mean), and that's it.
Apart from that a trailer for Multiplayer has been released, which showcases the potential of the new integrated gameplay systems(however I hate that they showcase such features from the game with the optimum control scheme):
They also showcase some colour changes abilities(apparently this includes different schemes) and of course more cooperative gameplay.
Having said that, I'm really looking forward to this game.
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Too much trouble, those things.. But the actual fighter mission was good once I found control settings that remind me of the old AC's. Those scripted moments however.. Annoyed the heck out of me. 
