You'll know when they ship because difficulty will sharply increase. Then everyone who wants to mine will need one to compete. Or they dont ship and things continue as they do today.
or all the bitcoins will already have been mined.
hahahaha, you are funny. Don't say you really think that to be true...
I don't know. Other than the lost opportunity cost, I'm a disinterested spectator. As long as there isn't a popcorn shortage, I'm good.