It comes after they joined forces last year to contribute to the ‘Trolls’ soundtrack
The singer also posted a snippet of some new music
"I hope to have some good news at some point"
The pop icon recalled a moment where NSYNC's Justin Timberlake altered his speech when speaking to R&B star Ginuwine
The untitled documentary is co-produced by former New Kids on the Block tour manager Johnny Wright
The song is taken from the upcoming 'Trolls Band Together' soundtrack
"It's gonna be may"
He also shared an update on the boyband's plans moving forward
The band reunited earlier this week at the MTV VMAs
The boyband last came together as a five-piece in 2013