Not only will Sora receive an amiibo, I am willing to bet he will receive multiple, due to Nintendo/Disney going all out with his alts, and him being the final fighter like

If they haven't made a full-length Hyperdeath Azzy plush all this time, then I won't forgive them because that's the only excuse we still haven't got a plush Azzy. : r/Undertale

No Sora amiibo? & Animal Crossing amiibo Card Series 5 News

Not only will Sora receive an amiibo, I am willing to bet he will receive multiple, due to Nintendo/Disney going all out with his alts, and him being the final fighter like

Going to Disney Every Day Until The Smash Bros Sora amiibo Releases - Week 2

Super Smash Bros Ultimate Amiibo Fights – Sora & Co #26 Villains vs Heroes

IGN on X: Sora from Kingdom Hearts will get his own amiibo sometime next year. This marks the completion of the Super Smash Bros. amiibo Series, 10 years after it got started

So, Who Will Be The Final Fighter In Super Smash Bros. Ultimate?

Final Fantasy's Cloud Is Set To Cause Some Strife In Super Smash Bros. On Wii U And 3DS

Super Smash Bros. Teases “Special Surprises” For Comic-Con - My Nintendo News

Amiibo News on X: Winners selected tonight. 400 retweets away for three winners. / X

An Immense, Massive, In-depth, Metal-Gear Surpassing Analysis of my Smash Switch Prediction Roster

1 year ago today Sora was revealed as the last fighter for Super Smash Bros Ultimate : r/KingdomHearts