I would be surprised if everyone get's their status updates this Friday. Roughly 300 people applied in R1 and it would be impossible to telephone that many people in one day. Also, Rice differentiates themselves from larger programs with their personalized touch and it would be inconsistent for them to send out a bunch of emails. It seems most likely that they will do what they did in the past according to last years thread. That is:
Wed: telephone accepted international applicants
Thurs: telephone accepted domestic and international applicants
Friday: AM send out email to everyone stating their status has been updated (the applicants must log into their account to find out.
all day: telephone all accepted applicants whom they didn't speak with yet