The NFL will allow teams to use video scoreboards to encourage crowd noise in stadiums during entire plays.
Although the scoreboards can only use audio prompts until 20 seconds remain on the play clock - down from 30 seconds - video prompts now can be used any time. Those videos also were limited to the final 30 seconds on the play clock until the 2013 season.
That's the latest change the league is allowing in an attempt to enhance the fan experience in stadiums. Last week, teams were notified they must place cameras in their locker rooms to provide video only, with the footage being displayed on the video boards and also on team apps. Teams have control over content.
Home teams also will be required to show replays on the video boards after all scoring plays, turnovers, challenged plays, first downs and receptions where the receiver ends up out of bounds. Multiple replays of any play automatically reviewed must be shown "with the very best camera angles available."
Visiting teams now must be introduced as a unit 10 minutes before kickoff.
The NFL also says 98 percent of tickets for 2013 regular-season games already have been sold. That includes season tickets, individual game seats and group sales.
Broncos: Backup defensive lineman Mitch Unrein signed Denver's one-year, $630,000 free-agent tender.
Browns: Cleveland acquired backup running back Dion Lewis from the Eagles in a trade for linebacker Emmanuel Acho, a former Texas standout. Lewis rushed for 171 yards on 36 carries and scored two touchdowns, but will most likely be a candidate to run back kickoffs for Cleveland.
Acho spent his entire rookie season on injured reserve after injuring his knee.
New Browns owner Jimmy Haslam no longer has a stake in the Steelers. Pittsburgh announced that Haslam's minority share in the team has been bought by existing stockholders and new investors Scott and Russ Swank.
Colts: Indianapolis signed free-agent linebacker Josh McNary and placed him on the team's reserve-military list. McNary will join the team when he finishes active duty in the U.S. Army.
Lions: Detroit signed kicker Havard Rugland, the Norwegian Internet kicking sensation. Detroit's deal with Rugland seems to give newly acquired kicker David Akers some competition or at least provides some depth at the position for practice.
The 6-foot-2, 240-pound Rugland posted a trick-shot video called "Kickalicious" in September. It has more than 2.7 million views.
Patriots: New England re-signed unrestricted free-agent wide receiver Julian Edelman.
Raiders: Oakland signed safety Reggie Smith and running back Rashad Jennings to free-agent contracts.
Saints: New Orleans and free-agent offensive tackle Jason Smith have agreed to a one-year contract.