Where did you get this information? As far as I can tell, the next launch is is for Orbcomm and should be to LEO.
The last two GTO launches did not have reusability test burns because SpaceX was contractually obliged to use all of their delta-v getting the satellites into a highly elliptical orbit (which would allow the satellites to use less of their fuel for the inclination change, thus extending their lifespan). As far as I know, SpaceX only agreed to these sort of terms for those two GTO launches and future GTO launches will still include reusability burn tests.
The last two GTO launches did not have reusability test burns because SpaceX was contractually obliged to use all of their delta-v getting the satellites into a highly elliptical orbit (which would allow the satellites to use less of their fuel for the inclination change, thus extending their lifespan). As far as I know, SpaceX only agreed to these sort of terms for those two GTO launches and future GTO launches will still include reusability burn tests.