I bet they are using "early enrollment => early start => early NFL => early money" as their recruiting pitch.
(They signed 24 recruits on 2/4 with 4 additional early enrollees => left 1 spot for early enrollee on 2017.
 Might have been used to push for commitment)
Which has been favored by quite some top recruits recently.
A lot of schools used this as a work around for early signing day in recruiting (which also has the benefit of avoiding 25 limit on NSD).
(They signed 24 recruits on 2/4 with 4 additional early enrollees => left 1 spot for early enrollee on 2017.
 Might have been used to push for commitment)
Which has been favored by quite some top recruits recently.
A lot of schools used this as a work around for early signing day in recruiting (which also has the benefit of avoiding 25 limit on NSD).