With the Netflix revival series A Year in the Life, Gilmore Girls creator Amy Sherman-Palladino finally got to give Lauren Graham, Alexis Bledel and the rest of the cast the send-off she always intended by ending the series with Rory's pregnancy reveal. Even though Sherman-Palladino wrapped up that storyline, she still ended the series on a different cliffhanger, leaving fans wondering who the father of Rory's baby is.
Source:https://www.cbr.com/gilmore-girls-father-rorys-baby/