+1 to all stats has been confirmed for human
+2/+1 for demi humans...
You don't agree that's what it should be? Because it's been confirmed that +1 to all for humans and +2/+1 for non-humans, RAW. Of course, you can always house rule it if you're not good with that.
It actually hasn't been confirmed. We've had one person claim to have gotten confirmation from someone else who was in the private internal playtesting, it's very much a friend of a friend situation, so why don't we relax on calling things confirmed until a WotC official confirms or the actual rules are out?