Here's what else HIMYM cast and creators Carter Bays and Craig Thomas revealed:

Meeting the Mother: Radnor was quick to gush about his first encounter about his future on-screen wife, Cristin Milioti, saying, "Right when she walked on set it was kind of like, 'Oh there she is!' It was this feeling of yes, that's her." The actor continues, "We're a very tight-nit group of five… and to add in this iconic mystery person could've been not great and she's so great. I couldn't be happier." Aww!

Fans also will get the change to fall in love with the mother. Bays explains, "We, like you, want to get to know this girl. We want to see Ted happy and we want to see the great moments that are ahead of him once he meets this girl." Thomas adds, "Ultimately, we wanted you the fans to meet the mother before Ted even gets to meet her and we're going to spend season nine getting to know her."