They have not yet said it was discontinued but Kodak's statment "Due to a steady decrease in sales and customer usage, combined with highly complex product formulation and manufacturing processes, Kodak is discontinuing" strongly implies to me that 100D is also not being produced.
Remember a few months ago they said Plus-X in 120 was discontinued but 35mm was staying. Then a few months later it too was gone. I feel (but do not know for sure) that when Kodak slits and packs the last master roll is when they announce it is discontinued. I would bet that the last coating of 100D has already been done Kodak just does not yet have it all ready for shipping to the warehouse for the final sale.
PS I just picked up 120 rolls of E100G and tossed it in the freezer.