The Detroit Lions will learn their 2026 schedule officially on Thursday. With Monday marking the beginning of what has come to be known as schedule week in the NFL's non-stop offseason, it's very likely that the Lions' schedule will be leaked slowly throughout the next four days before the initial announcement. Television networks will announce certain matchups as part of their upfront meetings, and most of the time these announcements will feature primetime matchups. As a result, the Lions could learn some of their biggest games on the schedule early. Teams can play up to seven primetime games in an NFL season. Last year, the Lions had five primetime games along with their annual standalone spot on Thanksgiving. They were 3-2 last year in those primetime games, with two of those wins coming on ESPN's Monday Night Football. Under Dan Campbell, the Lions have become one of the most popular NFL teams from a viewership perspective.…