Only the pool winners will advance to bracket play. PG events use a 32 team bracket system. They changed the larger events this year to 7 pool play games (8 teams per pool), and no consolation games. This means that the number of pool winners + wild cards = 32.
For 17u, the max of 32 pools of 8 were entered, so no wild cards. However, you do have 7 pool play games, not just 4 like in the past. Therefore one loss teams can still win the pool. Heck we would've won our pool last week in the 18u with 2 losses! (unfortunately we lost 3!)
I think this new system of 7 game guarantee and all those 7 games pretty much matter is MUCH MUCH improved over the 4 pool play games + consolation. The consolation games were always a mess...
my .02 cents worth...