I'm REALLY curious about this. Will they charge a transaction fee and have it as another revenue stream for them (like iTunes/App store)? Or is it going to be another commoditization of their competitor's/partners products in order to move more hardware (like iMessage). If it's the latter that would be a HUGE deal. I just can't imagine they would be able to resist taking a slice of that $12 billion/day transaction pie, though.
The implication from Tim was that Apple was not trying to make money off of this. He said that ApplePay would be successful because competitors tried to turn it into a profitable system for them, instead of focusing on making it work.