I just wanted to let you all know that Apple seems to be planning on allowing Siri to tell you how far away your destination is, when you'll get there, and maybe even how long it will take to get there. As proof, program in a destination and ask Siri to tell you how far away you are, when you'll get there, or how long you'll have to wait before you arrive at your destination. (You have to be running an iOS6 beta.) Siri won't actually tell you. She'll either get you directions to a different point or say you're almost there. It depends on whether she understands you correctly.