Heyo Weak Wolf. Ben's quotes are from a weekly post where I specifically covered your question - and, as Ben also said, it'll be more than eight cards.
As for the timing of released Waves, we're going by the production server. Wave 1 was pushed to the production (aka live) server this month, July. Wave 2 is scheduled for August, early September at the latest. Keep in mind, as I said in the weekly post about this, it's not an exact 30 days between waves. It might be four weeks later, or five weeks, but we fully expect to maintain our pace - barring Armageddon. Or Ragnarok. Which one is worse anyway? >_>