If you like living on the brutal, life-altering bleeding edge
the same way we do, odds are you've got iPhone OS 4 beta 3
installed on that 3GS of yours -- assuming you have an iPhone
3GS, naturally. That also means that you'll likely be interested
to hear that beta 4 is now out and ready for you to download,
install, and not brick your phone if everything goes according
to plan, just as long as you've got access to an Apple iPhone
Developer Program account. Go forth, intrepid readers -- and do
report back on your exploits, won't you?  [Thanks to everyone
who sent this in]  Switched On: Stowaway from the PDA era