Panic! At The Disco begin teasing SOMETHING, send fans into a frenzy

Panic! At The Disco are teasing something. And it seems to involve Will (actor Noah Schnapp) from the popular Netflix series Stranger Things.

Check out the details, teasers and tweets from the fan frenzy below.

Read more: Panic! At The Disco originally intended to be a hardcore band

Yesterday, Panic! At The Disco simply tweeted “IX XXII – join us” and links to a sign-up page. No one's sure what they're signing up for, but there's a good chance it'll get announced tomorrow since Sept. 22 in Roman numerals is IX XXII.

IX XXII – join us https://t.co/OxDzAQOFBF pic.twitter.com/bsxZcwA9wY

— Panic! At The Disco (@PanicAtTheDisco) September 20, 2016

Now, what about Will from Stranger Things? Well, the actor subtweeted Panic! At The Disco's mysterious tweet with the same caption, also tagging frontman Brendon Urie's Twitter. Panic! At The Disco retweeted Schnapp's subtweet. There's our connection.

IX XXII – join us https://t.co/VgxFNN2Sjq pic.twitter.com/bsxZcwA9w9 @brendonurie https://t.co/nihAXOnndw

— Noah Schnapp (@noah_schnapp) September 20, 2016

Most recently, Panic! At The Disco posted a teaser video with the caption “I spy, with my lttle eye !”

I spy, with my lttle eye !

IX XXII – join us – https://t.co/tIZXGajV5E pic.twitter.com/PgSiYPn4m1

— Panic! At The Disco (@PanicAtTheDisco) September 21, 2016

Read more: Brendon Urie surprised onstage by ex-Panic! At The Disco drummer Spencer Smith—watch

Here's Panic! At The Disco's new profile picture on socials to accompany the campaign.

Unsurprisingly, fans are in a frenzy.

@PanicAtTheDisco pic.twitter.com/Tktgmk5ApS

— gina �� (@milaflowercrown) September 21, 2016

@PanicAtTheDisco I already joined the cult sTOP

— emily (@gerardspancakes) September 21, 2016

@PanicAtTheDisco pic.twitter.com/o1HeEOmVrm

— emø chris wanna die (@bvlackparade) September 21, 2016

@PanicAtTheDisco i've joined the brendonati now tell me what is going on

— emma (@ACOUSTlCHEART) September 21, 2016

@PanicAtTheDisco bro I don't even know what this is but sign me the heck up

— sarah⇞ (@byesaraah) September 21, 2016

@PanicAtTheDisco I better get a jacket or something are we gonna get jackets pic.twitter.com/iIkhpjjxBL

— olivia ★彡 (@franticiero) September 20, 2016

@PanicAtTheDisco DID I JUST SELL MY SOUL TO PANIC!? pic.twitter.com/YtWJyCGzzB

— s❥ (@STUMPACKBLUES) September 20, 2016

I mean, probably. But Panic! At The Disco and Stranger Things? Who cares!

Watch more: APMAs 2016: PANIC! AT THE DISCO win Song Of The Year for “Hallelujah”