How to Get Wilds Unknown Promos?

This is my second set release, but I only found out/started learning about promos after. I know for Wilds there are going to be the Pre-release boxes that have one of 6 cards. And then the Parks exclusive Buzz Lightyear promo. However, I saw there are Violet and Dash promos. How would I get these? And is there any others that Ive missed?