Galaxy S10 launch event livestream: How to watch, start time, what to expect
https://www.cnet.com/news/galaxy-s10-launch-event-wednesday-livestream-how-to-watch-start-time-what-to-expect/
You can watch Samsung's livestream here:
The 2019 event will be at the Bill Graham Civic Auditorium in San Francisco. CNET will be on the ground to cover the announcements live.