I think the movie looks really entertaining.
On another forum (non-modeling site), I am a part of a thread discussing this movie. The consensus seems to be that (a) Emmerich has never made anything worth seeing and (b) the CGI is garbage. I disagree with the first of those. Independence Day was a really good one, and I think The Patriot is underrated despite its loose connection to actual history. This version of Midway looks, at least, like the producers have studied some of the history of the battle by including correct aircraft like the TBD Devastator.
So that gets me to the CGI. It seems the producers have a few options for depicting such a battle. Option A would be prohibitively expensive - find a few Devastators (and other aircraft, like a Val or Kate, not the fake ones we see flying at US airshows every year), restore them to flying condition and use them in the movie. And with that expense, they would never be able to accurately depict the fate of Torpedo Squadron 6.
Option B - build a bunch of models like in Star Wars
Option C - use CGI to depict the aircraft involved in the battle.
B could be a good option, certainly, but I think Hollywood just goes with CGI because it doesn't involve the expense of a model shop. Not really sure why CGI is so favored as I'm not involved in the business of making movies.
So does the CGI in the preview look real, or not? I'm really not able to definitely state that the producers have overdone a Dauntless dive bombing on a Jap ship, as I've never done it. To my eyes it all looks quite good. The only thing I'd perhaps have some mis-givings over is the shot of Zeros strafing guys on the ground by flying between buildings and beneath power lines and palm trees. Yeah, I doubt that. But I'm willing to overlook that if they make a movie that actually presents the battle as it unfolded with more-or-less accurate aircraft. No F6F Hellcats ditching in the sea as in the original Midway movie (or the even more hilarious F9F Panther nosecone rolling out of the conflagration of Charleton Heston's crash against the carrier deck in a Dauntless).
Count me as seeing this opening weekend (and it's good timing in that the Aggies have a bye week the weekend that this one comes out, so no college football conflicts for me).