It is a tradition really different from others.
With the official version of the calendar come tonightAnd with the League and its broadcast partners selectively announcing some of the games, there will be leaks as for the others. Various journalists. All day.
The league will not like it. They will try to get the networks that televise games to tell their journalists not to do it. Some will do it anyway.
It is no different to switch the draft choices in the first round. The information is available. It is easily obtained. It is even more easily disseminated, thanks to instant access to social media.
Obtaining the draft choices is easy. All the teams know the back of the selections waiting to be officially announced. All you need is a person with a single team, and the keys to the kingdom have been secured.
Regarding the calendar, the information is even more widely available. Team team videos are not suddenly generated between 8:00 p.m. and 8:01 p.m., the day of calendar publication.
Many in the wall of each organization know the configuration of the games. Football operations. Ticket office. Internal media. Social networks. Currently, the calendar is everywhere.
As a result, leaks are inevitable. And even if the NFL will prefer that people connect to NFL Network and / or NFL.com later during the day to get the information, a large part will already be there before the curtain officially falls.