Should be a development strategy similar to that of Type 093. The first batch (2 or 4) is used to verify the basic platform such as structure/reactor/propulsion system, and then improve the subsystem performance in subsequent batchesQuote posting @00CuriousObserver's post in the PLA Navy News thread: Namely, the construction of the first two 095 SSN boats is already underway, with the first improved 095 variant i.e. the 095A SSN in the works, per the Guancha Trios.