IMHO
Having a 2012, I suggest not getting too caught up on these dates unless you have a player who is so strong that they have received regional or state wide attention by virtue of a sophomore year all conference/all division/all state nod. These guys should get in front of pro scouts for assessments and to get on their radar. And maybe attend a PG Showcase to get on the web radar.
Anyone else needs to use the advice on these pages in terms of spending their money wisely by picking maybe an introductory showcase and attending a couple college camps in their rising junior summer, and focusing their primary bucks and efforts in their rising senior summer via direct school contacts, college camps, a couple showcases, and a good travel team who will get them to key showcase tournaments.
As far as the September 1 email contacts, and July 1 coaches call, I think worrying about those is a waste of time. If they happen they happen. If they don't, it doesn't really change what you should be doing.