is likely to want to try 4.0. We are having enough fun with all the accidentally upgraded to 3.1.3 let alone worry about 4.0 there is nothing Apple can bring to the table that we don't already have better with Jailbreaking!
On and on! imo I'd be crazy to want 4.0 right now oh wait I get commercials and a Winnie the poo book! I'm going to try it now!