nobody in the hack section
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!
Mutitasking
App control
3G Unrestictor
Mywi
Lockinfo
Themes
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!