My friend applied at Mel COE on June 25 for onshore 857 along with nomination application. He received his Ackg letter Monday July 23. I heard from other people who applied in beggining last week of June start getting ackg. letters.
This year DIAC received about 30,000 RSMS applications and with quota for 16000, I don't how many people be pushed to July 2013. About 20,000 pending from year 2011-2012 and new one coming it will be waiting game for many or they will use pooled quota from ENS and get away with planning level 16000.