I see a lot of posts saying they'll wait for OS X Lion to come preloaded in the 2011 iMac before buying. If you are doing this are you willing to wait another 4 months for this to happen? Apple (and other companies) have been known to stretch out release dates to the end of a season or quarter. September 5 being seen as the end of Summer in the US leads me to believe Lion will be released around that time. The time frame is based on conjecture of a worst case scenario.