it hasn't been said but i think not. if they did make another sonic show, which i hope they do, they would probably start of on a new series.As of yet, nothing has been confirmed.
maybe, maybe not. who knows? might come anytime on June 1st 2008 there was a new episode but another show took its place, so no one knows whether it was a mistake or not. there is a 3rd season but...
sonic x season 4 will be out sometimes in 2011 i understand sonic x season 3 left off with a cliffhanger but season 4 everyone will try to find some way to bring cosmo back
Sonic x ended with season 3 and sadly will not be going any further after that :( there have been rumors season 4 will be made but as no new episodes have been aired I think the show has ended...