Maybe you could file this under "duuuuh" or "DOY!" if you feel so inclined, but Dragon Quest fans should be happy to hear the next game is currently in the works. At Chiba's Niconico Super Conference 3 series creator Yuji Horii said Square Enix is in the process of "making the next" Dragon Quest.
It seems not everyone was prepared for the reveal, as Dragon Quest X producer Yosuke Saito and chief planner Anzai Takashi reportedly looked surprised when Horii said it. We'll have to wait for more details on what exactly the next step for the DQ series is.