Yes you can find out the news. With both my children, they were also notified by email.
Every school is different. Normally revisit day is during the month after March 10, but some schools also welcome accepted students anytime during that month. You should try and call in to make an appointment when you hear the good news.
It's better sometimes to go on revisit day since you will be able to sit in the classes, whereas other times, you may or may not.