When the show began a new season on Hulu in 2023, Hulu renumbered and moved episodes around the previous 7 seasons to create 10 seasons. Comedy Central aired season 6 and 7 in 2 parts and evidence of this can be found from a press release at the time:-
The future is looking bright for Fry, Leela and Bender! COMEDY CENTRAL and Twentieth Century Fox Television have announced today the pick-up of 26 new episodes (Seasons "7- A" and "7-B") of Matt Groening and David X. Cohen's brilliantly subversive animated sci-fi comedy, "Futurama." The announcement was made today by Twentieth Century Fox Television Chairmen Gary Newman and Dana Walden, and David Bernath, Executive Vice President, program strategy and multiplatform programming for COMEDY CENTRAL. The first installment of 13 new episodes will premiere in the summer of 2012, with the additional 13 new episodes to air the following summer of 2013 on COMEDY CENTRAL.
Hulu have confirmed season 11s episode count is ten episodes:
https://press.hulu.com/hulu-originals-exclusives-fall-2023-programming-slate/