So TSA has 13 more planes coming?

I am considering this place for the fast upgrade since I have plenty of 121 time already. If upgrades are currently running 1 year, in 2016 i'm thinking upgrade will come much sooner.

Seems the contract is ok, the only downside people gripe about is the fact they are 50 seat jet only. For me this is no problem but if I was to spend a length of time here when oil costs go up the fleet is at higher risk of being parked. So I can see there is only 1 disadvantage.

Any thought on this? where are the 13 jets coming from?

thanks