Apple may just have done it again. Subtle but significant advances to an already ground breaking device. Give it another year or two, and I will be out of a job. 90% of the population will have junked their PCs in favour of a computer that actually works, in almost all conceivable situations in consumer and business markets. Only software developers or true power users will need anything else (and by that I mean rocket scientists).
If you think anyone else as a chance of making a tablet, I suggest you keep looking for a long time.
Will I buy one? Not right now, but only because an iPhone 4 will better suit my immediate needs (integrated phone, camera, navigator, information portal, portability), and of course I already have an iPad. And I may yet wait for the iPhone 5. Need to see what funds are like after the holiday.
Meanwhile, I recommend you buy one.