Let's start with Selena, Taylor's bestie. She's famously said 1989 is her favourite album, and performed with Taylor as a special guest on the world tour.
Then, there's the handwriting that hints she may be featured on one of the upcoming songs from the vault.
Taylor has been drip-feeding lyrics from vault tracks on social media, with a line here and there for fans to decipher. One piece of paper showed a series of words and phrases written in alternating black and blue pens (we'll get to the black and blue theory in a minute).
The handwriting on each line is different, with the word Aquamarine linked to Selena - according to fans. In multiple videos on TikTok, Instagram and Twitter, Swifties are claiming the "q" matches Selena's handwriting.
Meanwhile, fans have tied Harry's handwriting to the next line that says What If. Fans have also been holding out hope that Harry would collab with Taylor on a special version of Style, the song that details their relationship.
Some Swifties have even gone further, to suggest these handwritten lyrics are actually song titles of additional vault tracks that will drop in a second album release. Which brings us to the theory that there will be more than one drop of 1989 (Taylor's Version).
Will there be a second 1989 (Taylor's Version) album release?
Fans have been working on many, many theories surrounding the 1989 (TV) release. One of the most prominent has been the idea that Taylor will be releasing a second album, with additional music and guest collaborations.
There were also theories that TS11 could be coming - meaning an 11th original album, along with all the re-recorded drops she's been doing. But mostly, fans think that there will be something extra special coming when 1989 is released.
We've already covered off the idea that a second album of collabs could be coming, but what about the other hints and clues? Let's dive in to the theories why she might be doing two releases.
What is the Glitch theory?
When Taylor dropped Wildest Dreams (Taylor's Version) from 1989 way back in 2021, the announcement video featured a glitch. The glitch is linked to her Reputation era, but some fans thought it meant there might be two sides to the 1989 release.
The glitch was also seen in the rolling credits of the Eras Tour Concert Film that was just released.
What is the new 1989 aesthetic?
When Taylor first announced 1989 (TV) some fans were surprised by the beachy aesthetic of the accompanying album cover and photo shoot, especially since the album is heavily tied to her life in New York City.
This sparked initial rumours that there could be a second version, with potentially more of a "rock" sound, compared to the high-octane pop of the original.
Why is the black and blue theory?
Then, fans began connecting Taylor's recent outfits and all of her 1989 (TV) posts to one key theme: black and blue.
In all of her recent outings, Taylor has sported black and blue ensembles or accessories. Her posts regarding the new album almost exclusively feature black and blue colouring, altering between the two.
In Swiftie world, this kind of intentional decision means something, and fans are debating what exactly that is in this instance.
There has also been a very specific 1989 (TV) image circulating on socials this week - not the dreamy, beachy blue album cover, but an alternate image of Taylor wearing a black leather outfit from The 1989 World Tour. Amos Heller, Taylor's bass player, is among those who have shared the image by an account called Taylor Eras Tour.
Is this a hint that the "rock album" theory could come true? Is it a hint at a Reputation drop? Is it JUST a photo? Time will tell on that one.
When will Reputation (Taylor's Version) be released?
With the black and blue theme taking over, fans have also questioned if the "double album drop" could include Reputation (Taylor's Version).
Taylor famously said "there will be no explanation, there will just be reputation." So fans are expecting it to just appear one day, and there are some small easter eggs to be uncovered, if you look closely enough.
In particular, the S on the "Taylor's Version" text on the 1989 (TV) cover looks like a snake. And that is very, very sneaky.
When is 1989 (Taylor's Version) released?
No word yet on Reputation, but the 1989 album (the first one of many, possibly) will be released at midnight in New York on October 27 - which is 3pm AEDT in Australia. We can hardly wait.