The Packers have made the biggest noise in cutting the roster down to 75 by placing DT Justin Harrell on the PUP list (out for the first six weeks) and releasing former starting RB DeShawn Wynn.
Minnesota didn't release a former starter, but LB Derrick Pope was released along with three other players who've never played in a regular season NFL game. Pope was surprising since he started nine games last season in Miami and was signed last March to be the top backup linebacker. He was also expected to contribute on special teams.
In Chicago, five reserves were released. Only S Josh Gattis and LB Rod Wilson played last season and Wilson has a broken arm. But right now, the big news is that Chicago's 1st round draft choice T Chris Williams is out with a herniated disk, probably for the season, and that Chicago knew about the injury prior to the draft.
Detroit's had some injuries and hasn't had to make any cuts yet, and even had roster space to sign two ex-Packers (TE Clark Harris and K Dave Rayner) and legendary bust QB Drew Henson.