Is there going to be a Metal Gear Solid 5

The creator of MGS 4 said that if there is then someone else would make it because he doesn't have any more Ideas. But if there is then it would proberly be before Snake dies (apperently he cells have been mutated in MGS 4 but I don't know due to not playing on MGS 4 yet), playing as Raiden or a Reboot of the entire series.