In Class A, I believe there will be 4 regions 1 - SE, 2 - NE, and the two west regions are 3 and 4. Each region will play a region tourney, with the champion obviously advancing to the state tourney.
But the champions only provide 4 teams, so there will be additional state play-in games between the #2 and #3 finishing teams in the region tourneys. For example, in the east these games will be R1 #2 vs. R2 #3, and R1 #3 vs. R2 #2. And the same will happen between Regions 3 and 4. These games will provide the additonal 4 teams to fill the tourney.
Then the 8 qualifying coaches will seed the tourney. So unless I'm missing something, a real strong region could get 3 teams into the tourney in a given year.