Far as I understand it, My Little Pony G5 is going to be distributed by Paramount, and is currently scheduled for release on September 24, 2021, which is currently 19 months from now. But, what you all also should know is that Paramount Animation has pushed back a LOT of their films to later dates, such as:
Monster Trucks (May 29, 2015 -> March 18, 2016 -> January 13, 2017)
Sherlock Gnomes (January 12, 2018 -> March 23, 2018)
SpongeBob 3: Sponge on the Run (February 8, 2019 -> August 2, 2019 -> May 22, 2020)
Monster on the Hill / Rumble (July 31, 2020 -> January 29, 2021)
Even Wonder Park once moved up to 2018, but ended up released in 2019 instead.
So it's possible that My Little Pony G5 may end up getting a 2022 release, seeing as though a majority of Paramount Animation's films hit theaters three or more years after they are first announced.