To Upgrade or not Upgrade...iOS 6
Today marks the day Apple rolls out its sixth iteration of iOS. Touted to have award-winning features, its one pitfall, as many have already pointed out, is its replacement of Google's Maps. Granted, Apple did "lease" Maps from Google and that contract expired last year but Apple's new substitute is far from complete. Take it from me, if you rely on transit maps and a specific set of trustworthy data points, you might be better off sticking to iOS 5.
But the simple fact is: When you buy an iOS 6 device, you get a worse experience for search and no ability to get transit directions out of the box, both of which are significant downgrades from iOS 5.
via Anil Dash