Jodie Whittaker makes her debut in Doctor Who on Christmas Day, and her full series starts next Autumn. By which time, hopefully all the obvious "Mork" jokes will have subsided.
Coincidentally, today I'm working on the Daft Dimension strip for the Christmas issue of Doctor Who Magazine. No, the 13th Doctor will not feature in it. Although I was the first to put her in a strip (see here) her next comics appearance won't be until the new series begins in 2018.