Not sure if this is true or not, as the guy who told me it won't be able to provide proof till he's on land.
So I call this a case of "He tell me" till he proves it.
But the shooting area after arizona will be a naval vessel with mikaela.
Allegedly, the other true stuff we know is:
Possibly no cybertron in this movie, and no flashbacks. (This seems odd since the entire movie claims more mythology and history. I'm thinking it's a case of right arm not talking to left arm, and will change.)
The allspark shard plays a factor, as well as the symbols on the bots and more history of the bots and mythologies.
Takes place 2 years after the first movie.
Devastator is in it with 7 cons to form him. According to the TFW Insider, and Toy Reports.
Megatron is a tank with one weak arm, as he had lost his entire arm in the first movie as seen while he was dumped in the ocean. Potentially a him choking sam scene.
Barricade is back as an Audi R8.
The surviving autobot cast is back.
Arcee is in it, probably rode by mikaela at some point as suggested from the walmart video and her biker leathers. Arcee is a bike, her two bike buddies still unknown though hinted at being minicons to bolster her, or other bots entirely. She may or may not reformat later, either those addons reformat with her, or they die. No clear confirmation of them combining to form her, or are essential to that function.
Sam goes to college at princeton, and starts freaking out at his ever growing unnatural knowledge. Something about another artifact and sam's exposure to the small allspark at the end of movie 1.(Philly film girl confirmed plus call sheets)
Jetfire is in it. Potentially starting out as a con. Though quickly back to autobot.
Discovered in the smithsonian. Call sheets show he has a decepticon logo, but he leaves with the humans who discover him, plus considering his prior personalities, not a far reach that he would question why the freaking out, or do an entire calm down I'm harmless spiel, similiar to that
G1 episode. Onset reports cite Simmons screaming Decepticon.
Sideswipe is the Corvette we saw. (Potentially without sunstreaker, as streaker was in the IDW comics before swipe, mirrors it fairly well that way.)
Jetfire combines with prime. (as much as I want this to be disinformation, I already know it's true, it's back pack style if the legends toys are any indication. Think Galaxy force Sonic Convoy.) When and as to why or where this happens is unknown.
There will be some naval vessel scenes. (Rumor, proof coming soon maybe? Coronado reports only suggest dreamworks title, still no direct proof of what they are going to be actually filming there.)
Sam has his hand hurt in the movie, potentially(rumor) replaced by something not so organic.
Soundwave is in it, though we don't know an alt as of yet. According to TFW Insider it's a Satellite from cybertron at first, then a truck like vehicle.
The Fallen is in it, with the video games nodding the original 13, whereas it's unknown if the movie will. (Verified by several sources, and insiders. Including the comic scribes, and game staff.) Now whether this is an actual new bot mode entirely, or just a persona that overtake megatron has yet to be revealed.
Everything else more or less has a large amount of speculation behind it, those are about the only facts that are almost guaranteed to be true.
Besides a bit of world hopping by the autobots, some scenes in egypt, china and more.
Ice Cream Truck is still officially unknown to which side, but speculation has said autobot, though I personally think decepticon, no one on set can confirm or deny either faction. All we do know is that he has no care of being seen by various humans, and follows in the arcee chase. Suggested twins later may be something else entirely, or the same, but there has been no clear proof of this. They either potentially reformat, or those two are something else as throwaway characters.
Another rumor is that there are more than one set of 'twins' in the factions.
All the other info I know has yet to be proven, or is solely rumor for now, among other instances of 'he tell me' and "shouldn't say"
So these are the bare essentials that I can vouch for, besides the naval vessel bit, which I'm only including at the insistence of that source inspite of no proof.
If this source is proven, it also fits in with philly girl's statement of megatron strangling sam. Possibly even the film ending with sam in decepticon hands. (Pun not intended.) And Mikaela looking to save him. This right here is all conjecture, though Philly film girl has proven reliable with her previous remarks and videos.