I won't be able to participate in this beta for 2 reasons.
1) I'm on Verizon, and Verizon never participates in the beta and
2) I'm using an s9+. I doubt it'll be involved again in the beta, but than too, refer to reason number one.
If you can get in, do key I'd know how the beta is going.
No, usually Samsung usually doesn't do announcements or updates on Sat/Sun in US, it is said Beta program is said to open in US on Monday, October 14. So registration should start around morning and update should rollout throughout the day on Monday.
Yep, Usually international market are pretty lucky, as international version Devices tend to get updates and other stuff before US devices does, but as international devices gets it is pretty close for things to be out for US devices too.