Looks incredible.
For those wondering about Nebula, I assume she is on the Guardians ship with Tony (couldn't tell if that's where she was in her one appearance in the trailer), just giving him some privacy to record his message. Makes sense Tony wouldn't mention her, since this is his "last" of presumably at least several messages so I doubt he would mention Nebula in his final words to Pepper.
Why is Shuri listed as missing? That would annoy me if she apparently disintegrated as well. I'm fine with characters who weren't in IW dying offscreen (like presumably Clint's family), but characters who were in the movie should have gotten on-screen deaths. Can't argue that because no other character would react to her disappearing they didn't feel the need to show it since no one was with Wanda to see her vanish (technically Sam as well but Rhodey was looking for him). Maybe she's gone AWOL for some specific reason, I dunno (I mean, since T-Challa's gone temporarily, I was really hoping to see her in the Black Panther outfit like she dons in the comics, even without the fruit she could use her technology to make up for the lack of enhanced strength).
I'm curious if Rocket went back to space. I would think it likely since he would probably want to find out if any of the other Guardians made it out okay (boy, is he going to be even more devastated). Heck, some are saying it'll be Carol that finds Tony and Nebula, but it could be Rocket (or heck, maybe Rocket meets Carol and they find Tony and Nebula together).
Also, for those complaining about the title, it's clearly meant to be "Endgame" in terms of the old guard. With the more recent MCU characters like Dr. Strange, Black Panther, Spidey, Captain Marvel, and of course the upcoming acquisition of X-men and FF, this is the final hurrah for a lot of the OG characters of the MCU.