The first version of the A3XX, the A3XX-100, will seat in typical configuration, without any spas, squash rooms, and whatever else, 550 pax. Emirates will seat some pax more (about 570, IIRC) in their A3XX.
The next version, the A3XX-200 will seat 650 pax in a typical 3-class-layout.
If any spas, bars, or whatever will be build in, this will mean less than 550 pax. On the other side, a 1-class layout for domestic flights could seat up to 800 pax.
Regards - Gerardo
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