Headcannon has returned to Sonic to remaster Sonic 3 & Knuckles for Sonic Origins. The developer, which in the past worked on the widescreen mobile remasters for Sonic 1 and 2 and co-developed Sonic Mania, confirmed on their Twitter that they also developed the enhanced, widescreen version of Sonic 3 & Knuckles. This would also appear to confirm that the other versions are indeed ports of the Christian Whitehead remasters.
For Stealth, who started Headcannon, this is the completion of something he has wanted to do for some time. He had this to say on Twitter, “Hey! Remember how I repeatedly said “If Sega wants me to remake Sonic 3 (& Knuckles) I’ll do it”? Well, needing this game to complete their planned #SonicOrigins collection of remakes, Sega asked me to take on this huge task, and I recruited some of my Headcannon buddies to help!”
Headcannon also confirmed that SEGA developed Origins’ menus, integration, and overall presentation.