It appears that Ikon will be releasing Donatello in his original cartoon look for their high end collectible figure line. Leonardo was previously released and it looks like Donnie will be next. You can view the purple masked hero here.
"You are here because the outside world rejects you. This is your family. I am your father. I want you all to become full members of the Foot. There is a new enemy: freaks of nature who interfere with our business. You are my eyes and ears. Find them! Together we will punish these creatures, these... turtles."