One thing I read a few weeks back was that the NFL players were looking to reduce the amount of required work during the offseason. Apparently that issue was the final "passionate issue" to be resolved. And it looks like the players are going to win some concessions. From ESPN:

One key concession made by the owners will effectively eliminate two-a-day practices during training camp as a health and safety issue that players termed critical to an agreement, the sources said. Teams will be allowed to have some helmetless and padless non-contact walk-through practices in lieu of a second training camp practice on the same day.

According to sources, teams will also reduce offseason workouts from 14 on-field organized team activities (practices) to nine. Six of those nine practices must be helmetless. Players also will not be subject to reporting for offseason work with coaches until May 1, although one source said that date could be in mid-April. Previously, players could work with coaches beginning in March.

With many players organizing practices on their own this year, which probably didn't involve helmets or contact, those future organized team activities might look just the same, except the coaches will be present. The players will get back to work with coaches around May 1, which coincides with the time when coaches want to get playbooks to their new draft choices. 

And I expect there are few players who will miss two-a-days.