The move could be in anticipation of Will Allen's release at the start of the league year March 13.
Rolle signing with the team isn't what's newsworthy about him, though.
Rolle played three seasons at Florida State, having graduated with a degree in exercise science (and a 3.75 grade-point average) in just 2.5 years. Although he was draft-eligible in 2009, he instead decided to further his education by studying at prestigious Oxford University in England.
There, he received a master of science degree in medical anthropology. Upon his graduation, he returned to the U.S. to prepare for the 2010 NFL Draft.
Tennessee selected Rolle in the 6th round of last year's draft, and he spent that season on the practice squad. He was released at the start of the 2011 season, and has been unsigned until the Steelers inked him to a futures contract.
Rolle was a highly-recruited athlete out of high school, the cousin of Giants S Antrel Rolle and former Ravens CB Samari Rolle, as a big-bodied safety. He excelled on the field while with Florida State, having earned Defensive Rookie of the Year in 2008, and third-team All America and All-ACC in 2008.
The year away from football probably didn't help Rolle's development as a player, but perhaps he'll have more of an opportunity to re-harness his 4.59 40-speed in his 6-foot-2, 213-pound frame when he's likely competing for a roster spot and special teams duties with Damon Cromartie-Smith in 2012.