HSToday.US has a short article here on the new classes of cutter boats.
Two things that might be significant:
- The Coast Guard hopes to use the new 35 foot Long Range Interceptor (CB-LRI-II) on the Offshore Patrol Cutter as well as the National Security Cutter, and
- They are going to test the 26 foot Over the Horizon boat (CB-OTH-IV) on the Fast Response Cutter.
Additional background from the Acquisition Directorate (CG-9) can be found here.
Chuck Hill's CG Blog 
A forth Long Range Interceptor (CB-LRI-II) has been accepted and assigned to Hamilton. All four Bertholf Class ships currently in commission are equipped with the new boat. http://www.uscg.mil/acquisition/newsroom/updates/lri022715.asp