https://www.cagesideseats.com/2019/3/29/18286585/rumor-roundup-mar-29-2019-wrestlemania-35-plans-title-situation-charlotte-flair-ms-wrestlemania

Rumors for the Day:
The Wrestling Observer Newsletter notes the plan for the main event of WrestleMania 35 is to “come out of this match with a clear direction for next year’s WrestleMania.”
It’s also noted that the idea isn’t to merge the titles but rather it’s likely they’ll announce that whoever gets pinned loses their title, be it Rousey with the Raw title or Charlotte Flair with the SmackDown title.
Speaking of Charlotte, she is going to be promoted as “Ms WrestleMania,” with merchandise calling her that already