So a new Sonic Chess set is being released over here, only it's part of a magazine set and you get one piece with every issue. It'll retail for £7 per fortnight (the first two weeks are cheaper) and will go for 64 weeks, so that's £216 spread out over two and a half years. The magazine includes details about the piece you get, a character profile, chess academy (a tutorial basically) and cuts from the Archie comics.
They're not the nicest pieces ever, but they certainly make an interesting set with all the obscure and unusual chao that make up the hero pawns. And the badniks making up the dark pawns is really nice too.
And this is presumably the proposed set, pumpkin chao and Jaws included:
Bishops- Egg Pawn x2
Knights- Shadow x2
Rooks- Metal Sonic x2
Pawns- Chopper, Jaws, Buzzer, Crawl, Newtron, Shellcracker, Motobug, Burrobot
King- Super Sonic
Bishops- Tails x2
Knights- Sonic x2
Rooks- Knuckles x2
Pawns- Chaos, Egg Chao, Swim Chao, Power Chao, Fly Chao, Fly/Power Chao, Pumpkin Chao, Omochao
(new Super Sonic render on there, too)
Someone who's got the first issue over at the Bumbleking forums took a couple of pics: 1, 2