To be competitive the width will probably be in the 49cm range (19inches or so that is +2 inches on Y) and hopefully the pitch 102cm+ (40 inches)

And given the horrible sliding Y seat, they should have plenty of interested customers, if they don't price it out of sight.

But will they convert the three row J cabin on the A330s to Y+ for the horrible red eye flights from Australia?

Happily wandering on the speculation front

Fred