Once it appears in the Samsung Members App you'll be able to apply to become a Beta tester for it and then if your accepted you'll be enrolled and sent information and instructions.
However as Beta is by it's very nature unstable at times and can break features / services in your phone throughout the Beta Programme I'd suggest to not put this on your daily driver.
Best of luck.
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "