Your first port of call for confirmed information about the film should be the Wikipedia article, which is unusually comprehensive in citing its sources thanks to contributors such as Megatimus.
http://en.wikipedia.org/wiki/Transformers_2007 (does contain spoilers)
But a few basic points:
- The release date varied by country, but mostly was July 2007.
- These aren't the characters we're familiar with from twenty years ago. Many have the same names and are expected to be quite similar in personality, but the film is a new timeline/continuity and won't follow old events. In particular, there's no connection with the 1986 animated movie.
- The film is directed by Michael Bay (The Island, Texas Chainsaw Massacre remake) and produced by Don Murphy (From Hell, League of Extraordinary Gentlemen). The lead role of Sam Witwicky is being played by Shia LaBeouf, with CGI supplied by DreamWorks.
- There are prelude books and comics, including a comics miniseries by IDW Publishing and a novel titled Ghosts of Yesterday by Alan Dean Foster. These have been coordinated with the movie production team to complement the story told in the film and (in theory) not contradict each other.
- There's also an official website and an official RPG-type site called Sector Seven that includes titbits of film information (older passwords to gain entry were FWIFFO or BYEBYEPOWERS, though these have probably phased out by now, as the site probably will be until a sequel gets underway.)
What’s with the tank’s name? The toy’s called Brawl, but the subtitles said Devastator. Huh? What’s it actually called?
Yes, the toy is called Decepticon Brawl, but the original script shuffled a lot of names in an attempt to confuse rumours regarding the final cast. One of the pseudonyms was Devastator. Purportedly Michael Bay thought this was a more fitting name, so opted to not change it to reflect the merchandise. Both names are equally accepted by the fandom – we know who you mean.
But isn’t there a bit where Jazz calls him Brawl?
No. Jazz’s line is “Come on, Decepticon punk.” A few people mishear "Punk" as Brawl, which when you think about it is a stupid line.
Why did the military guys choose a civilian area for their last stand? A bit irresponsible, isn’t it?
They didn’t. Mission City (not LA, though the scenes were shot there) was implied to be the nearest urban conurbation to the Sector Seven facility at Hoover Dam. With global communications supposedly down, the group stopped there in a bid to find some radios to communicate with their comrades. They camped down and let off their flares when the air support arrived. Unfortunately it wasn’t air support – it was Starscream. By the time this was realised, the decision had been made.
What happened to Barricade?
He was originally to have been killed by Optimus during the highway chase (following the fight with Bonecrusher), but Michael Bay elected to cut this scene so to leave the door open for the character to return in any sequel. This scene is also why Prime was late to the battle in Mission City.
Frenzy can lose his entire body and survive, but Jazz loses his legs and is beyond repair? What’s up with that?
Frenzy’s hardcore. Jazz isn’t.
Did Megatron spend several minutes just stood atop a building holding Jazz’s remains until Prime turned up, then?
Seemingly.
What were the songs Bumblebee used to help Sam pull Mikaela?
“Drive” by The Cars
“Sexual Healing” by Marvin Gaye
“Baby Come Back” by Player
When was Bumblebee’s voicebox repaired?
When he shrank the All Spark, a jolt of energy went through his neck, similar to the one that regenerated Frenzy. He doesn't speak until he sees Prime after the battle, whereupon he asks permission to. He's by-the-book like that.
What happened to the classic transformation sound? I thought it was going to be in the film.
This sound effect is used in only three instances. The first is when Blackout transforms in Qatar, the second when Bumblebee rescues the falling Sam and Mikalea, the third and final time is when Starscream leaves Earth during the credits. Oddly, he doesn’t transform when this sound is played.
Somebody said something about Starscream firing on Megatron. When did this happen?
Following Starscream’s attack on the air support, there are only three surviving planes. But eagle-eyed viewers state that there are four jets subsequently seen firing on the Decepticon leader.
Is the holographic simulation in the Decepticons the same guy as one of the Sector Seven people?
Nope. Sector Seven's Tom Banachek is played by Michael O'Neill. The hologram is played by Michael Reece, and credited as Moustache Man.
Why’s Spike called Sam?
Because Sam’s a sensible name. I mean seriously, who calls their kid Spike?
What happened to Scorponok?
Presumably he’s still at large, as he wasn’t seen again following his escape into the ground in Qatar.
What’s masturbation?
Ask your parents.
Why can the Autobots travel through space, but Bumblebee is taken down by those cold-gun things used by Sector 7?
When the Autobots enter, parts of the heat -and presumably cold- shielding flakes off into the atmosphere. When Starscream is seen during the credits flying into space, it's after Sam's parents are interviewed and the dog Mojo's cast has been removed, meaning it could be days or weeks later. The short answer is, "If they prepare for extreme hot and cold, the TF's are alright. It's surprises that screw them up."
How does Bobby Bolivia sell Sam the camaro without having the registration papers from the Department of Motor Vehicles?
The same way he sells Sam a car that's just magically appeared on his lot that he's never seen before - he's a crook, and probably forges the necessary documents.
Why don't Ironhide and Ratchet just get the cube to the helicopter themselves instead of covering Sam?
Because they can fight off the evil giant robots of death chasing them; Sam cannot.
The whole thing with computer hacking signal being a sound didn't make any sense. Why is that?
Because it's a movie, and no movie, in the history of ever, has depicted computers and hacking in a remotely realistic or plausible way. Seriously.
Why does Bumblebee know to go to the car lot to be bought by Sam?
Bumblebee has apparently been on Earth with plenty of time to learn all the same information Frenzy obtains in more subtle fashion. When Sam gets home after obtaining his new car, his ebay auction for his grandfather's glasses containing TF scribblings has already been up without any bids, so that was apparently the last piece of the puzzle Bumblebee needed before he called in reinforcements.
Why does Megatron say his name in English as soon as he breaks out of the ice?
Apparently he's been passively learning the language while he's been in stasis at the dam, and wants to clear up all that "NBE 01" nonsense before all the smashy-smashy starts.
Are there any scenes after the credits?
Three. The first and second are short skits involving Sam’s parents (and Mojo) being interviewed for television, in which they tell us that there’s obviously no government cover-up of alien invaders, because the American government is honest. The third is a brief shot of a Raptor (presumably Starscream) blasting out of Earth’s atmosphere, accompanied by the “classic” transformation sound.
X song is on the soundtrack as being in the film, but I didn’t hear it. Where is it?
Linkin Park “What I’ve Done” is playing on Bumblebee’s stereo when Sam drops Mikaela off at her house, and again over the final scene / end credits.
Smashing Pumpkins “Doomsday Clock” plays when Mikaela and Bumblebee (strapped to the back of a pick-up] decide to attack Brawl. It also plays over the end credits.
Disturbed “This Moment” is played over the end credits.
Goo Goo Dolls “Before It’s Too Late (Sam and Mikalea’s Theme)” soundtracks the humans getting into Bumblebee following the confrontration with Barricade.
The Used “Pretty Handsome Awkward” soundtracks the Bumblebee/Barricade car chase after the Decepticon first reveals itself to Sam.
HIM “Passion’s Killing Floor” is playing in Sam's room just prior to the return of "Satan's Camaro".
Styles of Beyond feat Mike Shinoda “Second to None” is one of the soundbites that Bumblebee plays. This one serves as his introduction in the Autobot role call scene.
Julien-K “Technical Difficulties” is purportedly played over the end credits.
When’s the score out?
9th October.