According to Dave Meltzer, the plan within WWE is still to add Charlotte Flair to the Becky Lynch vs. Ronda Rousey match at WrestleMania. There were hints about this during RAW when Stephanie McMahon mentioned finding a new opponent for the RAW Women's Champion because of Lynch's knee "injury." There may be a very good reason why Flair is being added to the singles bout, though.
While the original plan was for Rousey to face Flair at the Royal Rumble and for Rousey to lose to Lynch on the Grandest Stage of Them All, the reception to their Survivor Series match changed things.
As for why the term "main event" is being thrown around, that's actually being used by WWE for both the women's bout and Seth Rollins vs. Brock Lesnar. As of right now, Vince McMahon hasn't decided who will close the show and that will more than likely remain the case for quite some time to come. Are you excited for this Triple Threat match? Share your thoughts on that in the comments section.