I'm excited for both, and frankly just happy we are getting multiple Star Wars projects. I have some issues with some of the stuff that's happened in the stories, but overall I've been pretty pleased with the new movies, books, comics, etc... the later seasons of Rebels were fun as well. It's a pretty awesome time to be a Star Wars fan IMO.
I imagine we'll get our first teasers of both IX and Mandalorian at SWC. Though, I do expect we will get a IX title soon. They just wrapped filming in
and much of the cast has announced they're done filming. I think they're supposed to wrap picture mid this month.
I'm curious if we'll get some Aftermath tie in stuff in the Mandalorian, depending on how long it goes. I'd be really curious to find out more about the Acolytes of Beyond, which I think is around the same time the show takes place.