Saudia are getting their first A330 Regional this week, becoming the first operator of the type. Several cabin photos have found their way to the internet, ahead of the delivery ceremony.
Business class is 2-2-2 though no info on IFE or pitch. I’m counting 30 seats (5 rows).
Economy class, surprising, is 2-4-2 instead of the much feared 3-3-3 setup. If you look closely at the photo below, the galleys/lavatories in the middle of the aircraft are missing, allowing more seats.