Hello, Yea Forums. Project x Zone III is in devolopment and it will release this year if everything goes as planned. This time around we'll get two new brand protagonists: Aiko & Atsushi, two childhood friends that will be unexpectedly sucked into one of the mysterious rifts and will start their journey across worlds. Reiji & Xiaomu are back as side characters again.
There's some new characters like a Code Vein pair, Skyes of Arcadia pair, God Eater 3 pair, Tales of Berseria pair, Valkyria Chronicles 4 pair and some solos like Asura from Asura's Wrath, Keisuke from Digimon and Sam Gideon from Vanquish
The most surprising characters however are the guests: Quote and Curly from Cave Story as a pair unit and Gunvolt and Copen as pair units, probably two franchises that no one saw coming, but unfortunately there's not Nintendo characters in this one.
Other information i have is that you can talk with your party in the interludes with a new option that will show up in the menu, they will talk to you about the current goal in the story usually, but you can trigger special conversations to time to time.