Hi, I am wondering whether I should upgrade my development Macbook Pro to the Lion GM. I want to start testing and preparing my apps for Lion but obviously, I would like to disrupt my work flow and environment as little as possible. So I am wondering what happens when Apple releases the final version of Lion to the App Store. Will I be able to seamlessly upgrade the installed GM version to the final version (assuming they won't be the same)? Will I need to do it? Will my OSX Lion behave as a normal App Store bought version in terms of future OS updates? Or there is a chance I will have to reinstall everything after the final release comes to continue working normally? Thanks!