We heard from players like Christian Veilleux, Kalen King, and Jordan van den Berg for the first time Wednesday.
The game will air live on CBS on September 17.
Dotson's deal worth over $15 million is fully guaranteed over the next four years.
Joseph was selected as the No. 4 overall pick in the Canadian Football League Draft in 2021, but he'll now join the Bills as an undrafted free agent.
After 10 seasons with five NFL teams, the Nittany Lion is permanently hanging up his cleats.
The Chicago Bears' newest safety has been spending time with a reigning Super Bowl champion this offseason.