Tempting fate: Installing iOS 6 on the iPhone 3GS | Ars Technica
iOS 6 doesn’t make the iPhone 3GS any slower or more difficult to use than it was before, which should be good news to anyone who keeps theirs around as a secondary or backup phone—indeed, it’s pleasantly surprising how many of the refinements and improvements make their way down to Apple’s oldest-supported piece of iOS hardware.
Helpful article for all the 3GS users -like me - wondering whether to upgrade to iOS6 or not.