Air India has released their Worldliner seatmap.

It has 8 F seats, 1-2-1, and 35 business class seats 7 abreast. Economy is 9 abreast, allegedly at 34 inch pitch.

Any additional interior details?

When do the Worldliners arrive?

Which routes would they fly?

If its 34-inch, then that would be comfortable. I think they will be used on the North American routes.