Thought the statistics for Mac owners, PC owners and "both" owners seemed a bit odd and after 5 seconds of thought and some kindergarten math I realized why...
39% I own a Mac
34% I own a PC
12% I own both
This leaves 15% of people lining up on launch day apparently not owning a computer? I know apple are pushing to make iOS devices a replacement for a desktop or laptop but I hardly think this change has happened in the year between the release of the iPhone 4 and the 4S, certainly not amongst the consumers who are willing to line up on launch day.
I don't know anyone that would line up for an iPhone on launch day, but I do know a couple of people who don't own home computers but do own smart phones, they both work in office jobs where they can surf to their hearts content at work, both had computers at home until they shipped them off with their kids to college, a smart phone is all the internet they need at home.
I found the iPad stats interesting. 75% of people for the iPad or iPad2 are mac owners (mac + both) but much closer to 50% for the iPhones.