[UPDATE: It's finally officially online, click here for The Dark Knight Rises Teaser Trailer! ]

[UPDATE 2: It doesn't match the "alleged" description but The Amazing Spider-Man trailer is now online.]

Only one day after The Dark Knight Rises teaser poster appeared online, we're getting a play-by-play trailer description of two of the most anticipated super-hero films of 2012.

Trailer breakdowns for both The Dark Knight Rises and The Amazing Spider-Man have dropped online - and each of them sound like enjoyable teases that feature context for their respective stories as well as brief glimpses at the baddies the two heroes will fight.

If you attempt to avoid trailers (so as not to be spoiled at all) or don't want to know any information about The Dark Knight Rises and The Amazing Spider-Man trailers, it goes without saying that you should stop reading now. This article describes alleged shot-by-shot breakdowns of each of the highly-anticipated film teasers - and definitely contains MINOR to MAJOR SPOILERS depending on how much of blank slate you like to be when you sit-down in a theater.

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The Dark Knight Rises Teaser

The Dark Knight Rises teaser trailer: Rumored to screen ahead of Harry Potter and the Deathly Hallows, Part 2.

While it's certainly going to be exciting to see what director Christopher Nolan has up his sleeve for the final film in his bat-trilogy, fans shouldn't expect an all-out reveal of Catwoman and Bane - though it does sound as if the The Dark Knight Rises teaser trailer provides actual footage from the film, unlike first trailer for The Dark Knight (which featured fresh Joker audio but no video).

Check out The Dark Knight teaser trailer below - just to get a sense of how Nolan approaches teasers. Reminder: This is the The Dark Knight (2008) trailer NOT The Dark Knight Rises teaser trailer (details on the trailer for the 2012 blockbuster continue after the video):

While fans might be somewhat skeptical of just a trailer text-description for one of the most highly-anticipated films of next summer (given the amount of fan-fueled misinformation surrounding the film), the description was accompanied by a bootleg image from the trailer - featuring the film's logo. The image certainly corroborates the authenticity of the description - but, here at Screen Rant, we don't post bootleg images. So, if you're dying to see the image (which is essentially the trailer-equivalent of the recent teaser poster logo), feel free to search the wilds of the Internet - after you check out the full play-by-play description below, courtesy of Collider reader, Dave:

Trailer opens with studio logos set on top of the blue flame from Dark Knight.

Start panning up some buildings, but to screen card. EVERY HERO HAS A JOURNEY.

Cuts to a shot from Begins with Bruce walking up to that Village when he’s looking for Ra’s

Screen Card: EVERY HERO HAS AN END

Ra’s voice over: If you make yourself more than just a man. If you devout yourself to be ideal. And you become something else entirely. A legend Mr. Wayne….A LEGEND!

Screen Card: THE EPIC CONCLUSION

Cut to Gordon in a hospital bed laying on his side. Looks to be in serious pain. Has A breathing mask on. Is talking to someone.

Gordon: We were in this together, then you were gone…….Now this Evil rises. The Batman…..HAS to come back.(all this is said in a very raspy voice, in much pain)

Bruce/Batman(its not shown who he’s talking to, so don’t know in which form Bruce is visiting him in. My guess would be as Bruce Wayne) : What if he doesn’t exist anymore?

This part is the hardest to understand in the entire trailer, I listened to it at least 10 times but the score is over powering here and Gordon is having trouble talking. It sounds like if says Humor me while trying to laugh. I might be wrong here, full disclosure.

During this quick talk we’re shown a shot of the bat cycle when it drives up the ramp from Dark Knight, Gordon destroying the Act Signal all cut in with the Hospital. As well as super fast flashes of Bane’s face.

Pan up crumbling buildings to reveal the teaser poster, the camera zooms to the white opening and on an all white screen the title appears. The score reaches a fever pitch before turning over to The chanting from the website.

THE DARK KNIGHT RISES

Fades to black and then we see Batman backing away from something, then Bane enters from the left side of the screen. Very quick shot then the trailers done.

If the report turns out to be accurate, the trailer (which is expected to run for 93 seconds) is managing a lot of story-threads, connecting back to the events of the first and second film - as well as introducing new bad-guy Bane (though it sounds as if we'll have to wait to get a glimpse at Anne Hathaway's Catwoman. It'll be interesting to see how the teaser plays-out on the big screen but given the ominous conclusion to the trailer, it sounds as if Bane is going to be an imposing force for Batman to face-off-against - and offer the kind of formidable physical action we've seen in the comics.

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The First Image of Andrew Garfield in the Spider-Man Costume

The Amazing Spider-Man teaser trailer: Expected to debut at Sony's Comic-Con 2011 panel - no doubt appearing online shortly after.

Unfortunately, The Amazing Spider-Man trailer report is less difficult to verify and offers a less-detailed play-by-play - allegedly written by a Comic-Con employee who got an sneak peek at the footage. However, should the report turn-out to be accurate, fans could have an equally exciting Spider-trailer waiting on the summer-reveal horizon.

According to the description, the trailer sounds like a mash-up between the recent Captain America: The First Avenger marketing (with stick-man Steve Rogers) and Sam Raimi's original Spider-Man trailer - which prominently featured the spider-suit and manhattan skyline (with, at the time, the twin towers).

Just for fun, check out the original Spider-Man trailer below. Reminder: This is the Spider-Man (2002) trailer NOT The Amazing Spider-Man teaser trailer (read-on after the video for details on the 2012 reboot):

Now for the alleged description of The Amazing Spider-Man teaser trailer, courtesy of MovieWeb:

Trailer opens with Peter Parker [Andrew Garfield] being beaten by bullies, one of which is played by Chris Zylka.

Shots of Dr.Connors [Rhys Ifans] being injected by a greenish fluid in a lab.

Shot of Parker being bitten by a spider,in his own house in what appears to be an attic lab.

Shots of Gwen Stacy's face, Uncle Ben's face and Aunt May's face.

Shot of an alley with Ben [Martin Sheen] and Parker, then one of a dying Ben who utters 'With Greatest power must come greatest responsibility, never forget that.'

Shot of Parker putting on the costume, camera angle from his back. He turns and is now atop The Empire State Building.

Goes black for a few seconds, we hear some monstrous sounds and cut to Connors' lab where his foot transforms into a scaly one. Goes black and we hear roars.

Then we see a giant web with the title The Amazing Spider-Man. Coming Next Summer in 3d and Imax.

Like The Dark Knight Rises teaser report, there are definitely plenty of juicy details here - especially the claim that we'll get to see a piece of the Lizard transformation (ala Beast in the X-Men: First Class trailers, presumably). Sadly, also like the Batman trailer, it sounds as though the leading lady, in this case Emma Stone (aka Gwen Stacy) gets short shrift - with only a single face-shot of the fan-favorite character.

It'll be especially interesting to see how Marc Webb's film differentiates itself from Raimi's origin story - since, given the description in the trailer, it sounds as if a lot of familiar ground is being covered (Parker getting picked-on in High School and Uncle Ben's death).

Follow me on Twitter @ benkendrick — and let us know which trailer you're most excited to see.

The Amazing Spider-Man swings into theaters on July 3, 2012.

The Dark Knight Rises into theaters on July 20, 2012.

Sources: ColliderMovieWeb