Tough break on the timing for a 2014.
Be sure to keep communicating with target schools throughout the process.
Injuries are part of the game and coaches know that.
Were any offers (verbal or otherwise) discussed with these schools?
If these schools are truly interested in your son, and run good solid programs with integrity, they will appreciate the updates. This will also help you to stay in the loop with the schools and get a feel for their ongoing level of interest.
I can confirm what PG has to say about the surgery and recovery.
My 2013 son is going thru torn labrum surgery , throwing side,(Bankhart) rehab.
Surgery was in February.
Fortunately for him, he had already signed, and his school is standing behind their commitment.
Expect 6 months to be back to about 75%- 80%, up to 1 year to be 100%.
Also, with a goal to get to a D1 school, January is not a crucial date to get back on the field., it is a slow rehab process and do not rush it. he needs to get back on the field when HE is ready.
Good luck to your son!