Bettman is apparently "listening" to expansion offers, which probably means he's waiting for some rich bugger to show up with a ridiculous offer. He doesn't care if it's Las Vegas, KC, Seattle or wherever. Then that offer will set the bar for the 2nd expansion, which I'm betting will be in the Toronto area.
Bettman really doesn't want another small market Winnipeg situation, so Quebec City is the last resort if 2 other expansion choices don't pan out.
Either way, I'm betting there's going to be 32 NHL teams sooner than later.