Credit: Adam Rose/FOX ©2011 Fox Broadcasting Co.

We’ve already conducted a frame-by-frame analysis of Glee’s first teaser promo for Season 3, Episode 15: "Big Brother," released a few weeks back. Now that the show has released a newer, full-length promo for the April 12 episode, we’re all set to do the same thing again! From getting to meet Blaine’s (Darren Criss) slick older brother, to the thrill of the thrill of Senior Skip Day, and more — we’re examining every last second of the promo, piece-by-piece, and uncovering all the clues about what to expect!

Credit: Glee on Fox on YouTube Photo: Promo for Glee Season 3, Episode 13: "Big Brother" — Prepare for Graduation AND Meet Blaine's Brother (VIDEO)

Scene 1a: New Directions in the McKinley Auditorium
The glee club appears to be in the middle of some sort of dance rehearsal. But why is Sue Sylvester (Jane Lynch) leading them — what happened to Mr. Schue (Matthew Morrison)? “All right, sloppy babies. Let’s take it from the top.” Oh, Sue. Ever the motivator. But, hey! Isn’t that Joe Hart (Samuel Larsen) standing there? Look’s like he did end up joining the New Directions — just like we thought!

Scene 1b: Sue shouts out a command.
“Let’s take it from the top. Five, six, seven, eight!” Love the snazzy white disco suits, Schue and Puck (Mark Salling). But wait a second... Isn’t the disco episode not supposed to be air until the week after this?

Scene 1c: Amusement park alert!
Awesome roller coaster, Finn (Cory Monteith) and Kurt (Chris Colfer). What we wouldn’t do to be able to ride along with you! Senior Skip Day looks epic.

Scene 1d: Artie (Kevin McHale) singing in his wheelchair.
Wonder who he could be singing to?

Scene 1d: Now Blaine’s on stage.
His older brother, Cooper (Matt Bomer), appears on a flurry of TV screens behind him. Could this be the big Duran Duran mashup we’ve been hearing so much about?

Credit: Adam Rose/FOX ©2011 Fox Broadcasting Co.

Scene 2a: The countdown to graduation begins!
That’s right. Graduation. Plenty of our favorite cast members are on to bigger and better things after McKinley high. But does that mean no more Glee? Don’t count on it! Rachel (Lea Michele), Finn, and Kurt may all be dressed in their red graduation robes, but all three have already been confirmed as returning for Glee Season 4.

Puck: “I’ve waited five years for this.” Hah. Nice one, Puckerman. We bet you have.

Scene 2b: Last songs.
Wait a second. Mercedes (Amber Riley) is graduating, too? Is anybody still a junior?

Scene 2c: Blaine’s on stage.
Oh, right. He is. Thank goodness. Not everybody will be moving on from McKinley just yet.

Scene 2d: Last bombshells.
Sue: “Please don’t ask me which celebrity is the father of my baby.” 1) She’s being sarcastic, right? 2) If not, please say it’s Boreanaz. Please? We’d just about die with excitement.

Scene 2e: Last goodbyes.
Santana’s (Naya Rivera) graduating... And so’s Brittany (Heather Morris). What will life be like for our dear Brittana after high school? Now Finn and Rachel are standing in the hall. Finn eyes her nervously. “You ever thought about California?” Rachel looks shocked.

No, Finn. We don’t think she’s ever thought about California. Rachel has her heart set on New York Academy of the Drama Arts. New York is not anywhere near California. But why is he asking anyway? Could Finn have dreams of becoming a big Hollywood movie star... or is there another sort of surprise opportunity pulling him towards the east coast.

Credit: Adam Rose/FOX ©2011 Fox Broadcasting Co.

Scene 3a: Disco time!
“It’s eight episodes in a row of Gleeks and guest stars.” Look, we love that absolutely everyone seems to be wearing the signature white John Travolta suit from Saturday Night Fever. But they do recognize the disco episode comes the following week, right?

Now Mercedes is dancing. Kurt clasps his hands over his mouth, totally surprised. Now we’re back in the McKinley hallway and OMGMATTBOMER.

Scene 3b: Guest star Matt Bomer.
Blaine’s older bro is finally here! We’ve only been waiting for this moment for, well... ever. Gosh, he’s awesome. Big, enthusiastic smile. Snazzy black leather jacket. Looks like the Other Anderson might end up being almost as cool as his little bro. Almost.

Scene 3c: Now it’s time for...
Acting lessons from Cooper, the big Hollywood movie star! “Turn into a pose.” Cock head. Raise eyebrow. The glee club certainly looks impressed with it all. Well, except for Blaine. He’s crossing his arms and pouting. Little bro does not approve of Cooper’s shenanigans.

Everybody else seems really into it though. Kurt, Sam, Finn — Rachel’s even taking notes. Hah. Rory (Damian McGinty), Britt, Santana, Artie, HOLD ON A SEC. Is that QUINN (Dianna Agron)? The last Glee promo wouldn’t even confirm if she was alive or not!

Now, sitting in the choir room — Q looks completely fine. Didn’t she just get rammed into by a truck? How much time has passed, anyway? [Spoiler warning: Sure, she looks totally normal sitting down in the choir room like that. That might not be the full picture. Don’t assume that a full recovery is guaranteed.]

Scene 3d: Back to Cooper’s cheesy-but-impressive acting lessons.
“Again.” Big smile. Finger guns. Mike (Harry Shum Jr.) appears to be impressed. “One more time.” Slow-mo pose. Hold for a second. Relax and wait for adoring applause. Gosh, being a movie star sounds so difficult.

Scene 4a: And... end.
Grad caps fly. We’ve reached the end, folks. “Glee. All-new. Tuesday, April 10 on Fox.”

In the mood for even more? Check out our complete Spoiler Roundup with all the details we’ve uncovered about what happens after Quinn’s accident. Plus, take a look at our Episode 15 Spoiler Roundup here.

Can’t get enough Gleetastic goodness? Like us on Facebook or follow us on Twitter!