IOJ = Inspiration of Japan , which is the name given to all aircraft with full flat biz class seats. There are 3 different IOJ configurations for the 77Ws. (212/250/264)

The 212 and 250 have identical seats in Y in 2-4-3 layout.
The seats will be fixed back shell seat.

The 264 version has a recliner seat in 3-4-3.
They came later...the comfort level is obviously inferior with one extra seat, but honestly speaking, it's not the end of the world.

You will get 34 inch legroom in all 3 configs with pretty much the same inflight entertainment. You will also have legrest, in seat power + USB charging port.

In case of the scheduled aircraft gone tech, I doubt they will sub another config other than the ones mentioned above as they will need F class service. All aircraft with F class are now the IOJ version.