It’ll be July 28 at Gillette Stadium, with the rookie reporting date set for July 25.
That means the meat-and-potatoes part of camp will likely run from July 28-August 10, with the team opening the preseason on August 12 against the New Orleans Saints. The team has a “joint practice” arranged with the world champs for August 10.
The next week, the Patriots will hold a “joint practice” in Atlanta with the Falcons. That one’s on August 17, and since the club will likely travel on the 16th, the aforementioned two-week window is when you should plan on getting out there to see the team. Public access usually shuts down after the second preseason game, which is August 19 against those Falcons.
So mark your calendars.