Carvin Johnson, a safety from Metairie, LA, has committed to play at Michigan. Johnson was recruited by running backs coach Fred Jackson and officially visited for the Penn State game on October 24th.
I don't know a lot about Johnson. He was offered back in August, but his name didn't really pop up anywhere. He's unranked by Rivals and when I went to Archbishop Rummel High School's athletics page, it went straight to a fundraising page without offering any information on statistics or records.
From what I've read, Johnson was recruited as a safety and will probably play the weak safety position inhabited mostly by Jordan Kovacs at this time. He's 6'1" and 195 lbs. and supposedly a big hitter, which seems to fit the mold of that position.
Johnson is Michigan's 20th commitment in the 2010 class, which edges the Wolverines closer to the normal 25-scholarship limit. However, due to mass amounts of attrition, Michigan could sign a few January early enrollees back to the 2009 class, giving the program perhaps 28 scholarships to give. Michigan still needs at least one inside linebacker to go along with a few more defensive backs, an offensive lineman or two, and perhaps a tight end.