The Chicago Bears don’t make any announcements when they make subtle changes to the roster list on the team’s official website, but behind the scenes, they’ve made some specific designations for players of note.

As Twitter user Jonathan Wood pointed out, the Bears have tinkered with the positional listings for both sides of the ball, potentially indicating what’s to come in 2018.

Here are five things that stand out on the Bears official roster, as of June 21.

Cody Whitehair and James Daniels are both centers

The roster lists both Cody Whitehair and James Daniels as centers, specifically, rather than giving them some kind of multi-position designation.

For example, converted defensive lineman Rashaad Coward is listed as just “OL” rather than locking him into one position in particular.

When the Bears drafted Daniels, Ryan Pace said he would learn both guard and center, with left guard as his likely landing spot.

The rookie isn’t being handed the starting job, though, and he could start training camp as the backup center behind Whitehair until he proves himself worthy of a starter’s role.