Sega of Japan decided to respond to the erroneous reports today. "Distribution of Mega Drive content through e-Distribution is something that cannot be formally announced by our company," said the Sega statement, making use of the Japanese name for the Genesis. "We're now at the step of looking into it."
At the very least, Sega's statement suggests that the company is willing to put its classic Genesis properties on something other than the Wii's Virtual Console.
As for the Turbo Grafx comments, we attempted to contact representatives of Turbo Technologies Inc, but the number was disconnected.