After the recent showing of a new The Waters of Mars Trailer at San Diego Comic-Con, many fans of Doctor Who have begun speculating about the episode from what can be seen in the trailer. The trailer appears to show unclear footage of a woman who is believed to be Rose Tyler holding Jackie and Pete Tyler's baby, Tony. An image of the footage can be seen below:It was revealed at the end of the Doctor Who series two finale, Doomsday, that Jackie Tyler was pregnant with parallel Pete Tyler's baby. Billie Piper who plays Rose Tyler and Camille Coduri who plays Jackie Tyler were recently spotted filming for the final Doctor Who special of the year, although it is believed that the scenes are set in 2005. Please be aware that the image is only speculated to be Rose Tyler holding Tony Tyler, meaning that it could possibly not be them.