Tina Fey Tina Fey

Filming for 30 Rock's final season is underway and executive producer Jack Burditt has shared a very revealing photo.

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Burditt tweeted, "Back on the Plaza" with a photo of Tina Fey holding what appears to be a baby.Could this be Planty? Does Liz Lemon finally get the child she has always wanted? Is Criss the father?So many questions! And it looks like we'll have to wait until 30 Rock's premiers on Thursday, Oct. 4 at 8/7c to find out.