Board Thread:Speculation, Theories, and Rumors/@comment-26167440-20160406232859/@comment-679780-20160726152222

Groovykid2000 wrote: Mystic Monkey wrote: I feel the same reason for Super Tails and Super Knuckles. And no, Team Super Sonic isn't an excuse for them.

But maybe if Silver ever has his own game or share the spotlight with another protagonist then maybe more of a chance. Super Tails and Super/Hyper Knuckles don't exist anymore because the Super Emeralds were confirmed non-canon by Iizuka. https://youtu.be/0nzxRoIX4QU?t=1179

Iizuka didn't say they were no longer canon, he said they were exclusively for the lock-on since Sonic 3 came in two parts. Since S3&K was regarded a game in it's own rights, additional Super Emeralds were added, but given 14 emeralds and the Master Emerald was deemed too much, it was decided just the Chaos Emeralds for Sonic Adventure.

However, there are some overlooked details:
 * 1) The Chaos Emeralds and Super Emeralds are actually one in the same. The Super Emeralds are the Chaos Emeralds own super-state. The way I see it, the Chaos Emeralds were originally old single cut until Sonic 3&K when the Chaos Emeralds became brilliant cut and grew to larger size. I believe what happened to the emeralds afterwards was they returned to being Chaos Emeralds in size and power but still retain their brilliant cut shape, retaining a portion of the power they once had. It explains why Sonic has new abilities in his later game that resemble Super Sonics old abilities.
 * 2) Super Tails and Super Knuckles are transformations confirmed in the classic era from the regular Chaos Emeralds, not the Super Emeralds. Thus it should still be possible for them to use the Chaos Emeralds if Sega ever decided so.

Sega wants to sweep Super Tails and Super Knuckles under the rug, (we might not see them in Archie's post-SGW) but the fact is they happened in canon, main-series game and that is something Sonic fans will not forget about and why they still have hope for Super Tails and Super Knuckles someday.

I find Super Tails and Super Knuckles returning much more likely than Hyper Sonic.