There are an estimated 2000+ applicants awaiting an entry date, but fewer than 1100 RN rating entrants expected this year, with the 'average' wait being somwhere between 18 & 24 months depending on trade & time of taking the recruiting tests.
Again, your AFCO are best placed to advise estimated entry dates as each candidate differs.
Generally entry dates are allocated about a term ahead, so those starting in June, will find out no later than March (unless it's a short notice/previously cancelled place)