Image: The Cw

BEVERLY HILLS, California Nerd dreams do come true.

The Flash and Supergirl will have a musical crossover episode, executive producers for The CW's superhero presents disclosed during the network's Television Critics Association presentation Thursday.

And that was just one proclamation dropped during TCA.

Here's everything we learned from the executive heads producers of Supergirl, The Flash, Arrow and DC's Legends of Tomorrow.

MUSICAL CROSSOVER

This is not a drill.

It comes as no surprise given that the castings of both The Flash and Supergirl are filled with Broadway alums.

Not to mention stars Grant Gustin and Melissa Benoist both appeared in Fox's musical comedy series Glee. EPs Andrew Kreisberg and Ali Adler noted that Benoist and co-star Laura Benanti would sing on the Supergirl defined all the time.

But fans can thank executive producer Greg Berlanti for making their musical fantasies come to life.

“I've been resulting the charge myself, living in the nexus of loving musicals and loving superheroes, ” Berlanti said.

Victor Garber, who sings “Edelweiss” to Nazis on DC's Legends of Tomorrow this season, will also take part in the crossover.

“Victor( Garber) was pitching me some anthems the other night at dinner, ” Berlanti added.

The episode will feature pre-existing ballads, though Berlanti said they are looking at writing one original anthem per episode.

The episode will likely involve being inside a characters' mind, but Berlanti emphasized “we'll be careful of how they break into song.”

The musical episode will be either episode 13 or 14.

Meanwhile, the existing planned crossover episodes will air in the last week of November and first week of December.

Exploring sexuality

“A significant character” on one of the CW superhero indicates is likely to be exploring his/ her sexuality, Berlanti said.

No other details were revealed.

“Were not trying to be coy about it, ” Berlanti said. “But we really want the audience to enjoy the character growths, and not inevitably be ahead of the storyline.”

No more Arrow flashbacks

This is the last year of flashbacks, executive producer Marc Guggenheim confirmed.

Season 5 flashbacks will take place in Russia. Throughout the season, Oliver will be balancing being the mayor, a superhero, and training vigilantes inspired by him.

Episode 507 of the series will introduce Vigilante.

Kevin Smith: Director

Smith will direct an episode of Supergirl and an episode of The Flash next season.

Batman will not appear in any of the CW shows

Sorry fans: That rumor is officially simply a rumor.

So much casting news

There will be many, many new faces joining the CW superhero universe.

Dolph Lundgren is joining Arrow as a Russian character this season.

Sharon Leal will play Miss Martian on Supergirl.

Christopher Wood will play Mon-El, who was in the pod that crash-landed, on Supergirl.

Lance Henriksen will be appearing in DC's Legends Of Tomorrow Episode 205 as Obsidian of the JSA.