In a Twitter post, Masahiro Sakurai stated that the last bit of work he needed to do for SSBU was a Sora amiibo.
Super Smash Bros. Ultimate's Final amiibo Is Coming In 2024
Super Smash Bros. Ultimate is now done. That is according to series cr, Nintendo Games
SSBU Sephiroth, Steve, Alex, Mythra, Pyra amiibo Confirmed - Siliconera
I'm so tired of having this conversation : r/amiibo
Masahiro Sakurai says his work on Super Smash Bros. Ultimate has come to an end
You are a legend Sakurai 🙇🏻♀️🙇🏻♀️🙇🏻♀️ Thank you for creating , Nintendo Games
Super Smash Bros. Ultimate Archives - The Escapist
Masahiro Sakurai Says His Work on Super Smash Bros. Ultimate Is Now Done - IGN
Super Smash Bros. Ultimate - IGN
Smash Bros. Creator Masahiro Sakurai Supposedly Confirms He's Semi-Retired
Super Smash Bros. Ultimate, SNK Wiki
Sakurai Says His Work on SSBU Ends With Sora amiibo
Super Smash Bros. Ultimate Director Says His Work is 'Done