Mine shipped with 1.1, and I thought they all did. However, it would make sense that some have 1.0. Not having used 1.0, I can't say what changed, but I would definitely make sure you have it installed.
if you have 1.1 is the screen good or bad?
I've had one from Best Buy and one from Apple. Both had 1.1 and it has nothing to do with the screen problem.
I picked mine up from the knoxville apple store and mine works perfect. I hope I dodged a bullet.