Let the countdown begin. Ed Sheeran and Taylor Swift's latest collaboration will be released Friday, the English singer-songwriter shared in an Instagram post Wednesday.

"The Joker And The Queen featuring my good friend @taylorswift is out this Friday," he captioned a post featuring a snippet of the track.

Before Sheeran announced the news, fans strongly believed the release would be a remix to "The Joker and The Queen," a song from his most recent album, "= (Equals)."

According to fan theories, the duo has dropped plenty of hints alluding to the collaboration, including an official lyric video for the song that in the publishing info declares, "The Joker And The Queen (feat. Taylor Swift)," and an Instagram teaser that showed Sheeran signing CDs with artwork depicting a playing card that's one half joker and one half queen -- with the queen looking very much like Taylor, with blonde hair and bangs.

This isn't the first time the two have teamed up. They've previously released three songs together, all on Swift's albums: "Everything Has Changed" on Red, "End Game" on Reputation, and "Run," a vault track on Red (Taylor's Version).