I work in the effects industry but I am not affiliated with this film. We do have an online community (member only) where we discuss various projects around the various studios. I have some knowledge about some of the robots in the shots from the trailer.

The robot with the "loose" treads is called Scrapper. Hence the reason he is "fist" fighting with Bumblebee.
- The yellow robot is Rampage.

- The helicopter is Blackout. You could see it at the ShoWest if you were there but more now with a HD feed of this trailer you can see that Blackout has rust on him just like Megatron does. Blackout is mostly intact.

- The robots crashing into the aircraft carrier are the Constructicons. Many people believed it was members of Starscream's air force but as you can see from the video there are no robots present. We saw an additional scene where Long Haul and Mixmaster are destroying the ship from within and end up ripping the hull of the carrier in half.

-What I was told is Soundwave has been scanning vehicles and when the Decepticons come to earth they fly by him in space and receive their alt mode on the way down. [Strategically and story wise, this is a genius idea]

- This is why Long Haul, Scrapper, and Mixmaster are as their alt modes over Megatron. Brawl and Bonecrusher do not return. They use Brawls parts to reform Megatron underwater (tank tracks and fitted with a particle cannon that Soundwave provides.

- Soundwave is only seen in the trailer as one of the 4 robots down in the ocean. By the way if you think Long Haul is huge Soundwave is about 6 feet taller. The other plot point is the cold and pressure does not affect their bodies like the humans thought they would. Two Decepticons give up their sparks to revive Megatron and Blackout who we find out is 3rd in command behind Starscream.

- Michael Bay made Soundwave's role as Megatron's most trusted friend (aka bodyguard and secretly unknown to Starscream as the real number 2) hence the recovery effect by the Decepticons.

- Mixmaster and Megatron can semi-fly in the film but not much. Megatron has back rockets and Mixmaster has the spinning gears turbines under his arm shields (cement mixer barrel) that he uses a few times. Mixmaster has a lot of screen time. [This would explain how Megs "swimming" up so fast and how Mixxy gets on the bridge]

- We saw a short 5 second shot where Long Haul stomps on Jazz's corpse underwater. [Sorry but I have not and still don't think Jazz returns and I could see this being Bay's definitive statement on the matter]

- There are 5 other jets that fly with Starscream but have not been named at the time of the show. I do not know the type of aircraft.

- Barricade is the one crashing into the library but isn't seen.

We saw more of that shot at the ShoWest show in private. Finally the major spoilers is as follows so look away if you don't want to know.

Remember when Michael Bay said Ravage does something no other transformer does? Well Alice is Ravage. Well they kinda gave it away when they said she had a tail and a tongue. Ravage is really small like a real jungle cat. He is sent to kill Sam but realizes Sam has information about The Fallen so he tries to get it from him. Once she turns on Sam and comes after him then she shows who she really is and Barricade shows up to help. Enough said. Now I said enough but hey there was 300 plus people at the ShoWest after party. I am out. Enjoy Revenge of the Fallen because a lot of great lads at ILM and DD did the work. [This is an elaboration on a plot point that video and story leaks indicated and Orci indirectly verified]

This is a shock to us here at Dreamworks. We are NOT asking you to remove this info [maybe a few months ago we would have] but we will clear some up for you. I will say that most of the info is correct but some is not.
- The robot that is fighting Bumblebee is NOT "Scrapper" because if you look closely he is seen by the wall [yellow bot] when Shia & Megan jump from the blast of Starscream. We aren't revealing if the red bulldozer has a name just yet. Around 10 bots will be nameless.
[Could this be Overload, the 7th Constructicon recent articles mentioned?]

- 2 Decepticons do NOT give up their spark for the return of Megatron. It is just one. If you look through TF mythology this won't come as a surprise. This character willingly sacrifices himself.
[I believe this is a reference to Beast Wars series which created the Spark concept and made them transferable. Who does the sacrificing? If Blackout does comes back, does a Decepticon also die for him?]

- A lot of people speculate that the tank tracks on Megatron are from Brawl--they are NOT. His tank tracks are Cybertronian metal and that is the reason most of his body has rust but the tracks do not. He is built from deceased Decepticons but not from the Laurentian Abyss. There is a double-meaning to the name Long Haul (think back to his F.A.B. toy bio)

- Isabel's character is NOT a human form for Ravage. I will not say who but think back to the videos I am sure you have seen with the crew & the puppet-like minion. Ravage actually has nothing to do with the college aspect. Soundwave enlists someone else for that job. All I can say is this...Ravage is far too big [unlike the info you have] to be Isabel.
[This does not discount that Alice is not a pretender, just not a skin for Ravage but another un-named Transformer such as the Frenzy-like creature. Mass wise, Ravage does seem way too big.]

- There isn't a character in the film named "Gridor" because it indeed is Blackout. We had that toy made because we weren't going to show him until this final trailer and we felt if the toy was leaked with that name [we were right] it would ruin the surprise. Mike insisted on the scene with him in it for the Vegas footage. Fans will indeed see a Blackout toy after the release of the film.
[Looks like Blackout, attacks like Blackout, if sounds like Blackout, must be Blackout, but why the white coloring?]

- Starscream does have re-enforcements however there are only 3 that accompany him. They also use the same scanning technique. If you remember, we had an original artwork with Soundwave in his satellite mode where meteor bots are flying by. Ehren came up with the idea like Teletran-1 for the Autobots. This is but one of the many things Soundwave adds to this film. Mike loved this idea because it saves time on having each individual bot scan & transform.
[This is a genius idea because now very little screen time has to be wasted on getting Decepticons in an alt mode, they just literally do it on the fly and go right into the main story]

- That was a secret of ours however, one of our biggest secrets is now revealed regarding Barricade. As Mike would say...the cat's out on that one. The crew knew the cop car would draw attention on set hence the reason there wasn't a confirmed set-picture---the car is CGI for roughly 3 seconds before a transformation to robot form occurs.
[We already knew Barricade was back, just not how he would be used]

- The rest of the info is indeed accurate along with the info on Jazz. We knew a lot of people wanted him to show up but if everyone returned it defeats the purpose of having tragedy in the franchise---same with Brawl & Bonecrusher.

I'm sorry if any info has been spoiled for you but the great thing about our dedication to this film was for each and everyone of the fans out there. We listened to all the good & bad comments over the past couple of years. Enjoy the film!!

Turns out that Transformers 2 production is not quite finished as the cast performed some pickup shots this week for the film. This information is supported by an interview with Tyrese, a tweet from Megan Fox and a video of the area that includes shots of Shia, Fox, Optimus and Bumblebee.

Megan's tweet:

    surprise surprise! shia and i were filming some more scenes the other day. can't wait for everyone to see

Tyrese on the shoot and pickups with SciFi Wire:

    "Yeah, we did some new scenes, some new shots, got to the set around 10 this morning," Gibson said in a group interview. "Today we officially wrapped Transformers 2: Revenge of the Fallen. Any missing pieces there were, we picked them up today. They're going to go ahead and put it in the chop shop and put the magic around it and go ahead and add it into the film."

    What exactly were the pickup shots you did today?
    Gibson: I can't really speak on it, but that was a nice try.

    Did you get to go to Egypt?
    Gibson: No, I didn't get to go to Egypt. I was supposed to go, but you won't be able to tell I'm not there. ...

    Will you be part of the third one?
    Gibson: I didn't die in 2. I can tell you that.