I think Bookie definitely signs because he graduates in December. There maybe more. And yes, their probably is some room for concern.
Now, there are positive and negative factors in play with this early signing period.
On The positive, It will halt coaches like Harbaugh or Saban from accepting early commitments from dudes who they plan on "letting go" in January.
However, this is really going to benefit schools like Iowa State or Cal or Virginia. They might have a bead on a lesser known propsect who blows up as a Senior. In the past, some of those commits to Cal or the Clones might all of a sudden start receiving a ton of attention from top 25 programs late in December or January.
9 times out of 10, those guys reneged.