The DDS are working on a "next generation" transport/oiler (though it seems to be more an evolution) to enter service around 2118. The Type 131 would be a SUP based design but feature a high degree of mission modularity. Replenishment equipment for example could be fitted and configured in a matter of hours.
If the DDS decide to go ahead with the Type 131 then the final 2 Extender 73As on order could be cancelled. No Provider 71As are currently on order though there is the need for more.