Although he showed potential during the preseason, Johnson was clearly behind the other running backs. Jahvid Best is obviously the starter, and Maurice Morris will be the backup if he's healthy. Harrison did enough in the last couple weeks to make his case for a spot on the roster, and it appears he will remain on the team. The same goes for Brown, who looked pretty good this preseason.
In addition to Johnson, the following players have been released by the Lions so far today: defensive tackle Robert Callaway, wide receiver Nate Hughes, defensive tackle Quinn Pitcock, defensive end Keyunta Dawson, offensive tackle Kirk Chambers, linebacker Cobrani Mixon and cornerback Paul Pratt.
So far we know that Pratt is expected to be signed to the Lions practice squad if he clears waivers.