Square Enix has kindly confirmed to me both Daisuke Watanabe & Shintaro Takai are in Business Division 1.
They are all still working there within Business Division 1.
This is exciting news as Watanabe was the Lead Scenario Writer on the FINAL FANTASY XIII series and also worked as a Scenario Writer on both FINAL FANTASY X and FINAL FANTASY X-2. He also worked on FINAL FANTASY XII, early KINGDOM HEARTS titles, DISSIDIA, FRONT MISSION EVOLVED & Threads of Fate.
While Takai worked on Mana games for the SNES before working on FINAL FANTASY VII and FINAL FANTASY VIII then FINAL FANTASY X as an Art Director. Takai was then the sole Art Director for X-2. In the past decade he worked on DIRGE of CERBERUS, the FINAL FANTASY XIII series as the Graphics & VFX Director, helped out on TYPE-0 and as Art Director on X/X-2 HD.
Square Enix also re-confirmed Toriyama & Yuji Abe are both still in BD1 as well. None are currently confirmed to be working on any announced projects. Square Enix added
Updates to come eventually so please be patient with us.