Let's get right to the point: If you don't already have an iPad, chances are you'll be very happy with the third-generation model that goes on sale Friday. If you already have an iPad 2, there's little need to upgrade.
It isn't that the new iPad lacks impressive features -- most notably, a vastly better display and an ultra-fast Internet-connection option. It's just that it seems designed to maintain Apple's huge lead in the tablet wars, rather than to extend it.
The closest parallel might be the iPhone 4S, a similarly incremental updating of its predecessor. The 4S, though, had one genuinely breakthrough feature: Siri, the voice-based personal assistant. For all its improvements, there's no comparable innovation in this year's iPad.
The new tablet, which Apple is just calling "the iPad," is in many ways indistinguishable from its predecessor, the iPad 2. The pricing is unchanged, ranging from $499 to $829, depending on storage capacity and network options. It's a bit thicker -- 2/100ths of an inch -- and less than 2 ounces heavier. Otherwise, it's the same height and width, with the same-sized 9.7-inch screen.
But, oh, what a screen. For this new edition, Apple has replaced the previous, perfectly nice one with the same Retina Display it introduced on the iPhone 4. The new screen provides 2048 x 1536 resolution, which is to say four times the number of pixels of the old one, and more even than a high-definition TV set.
While the Retina Display on the iPhone wasn't an earth- shaking advance, the impact is far more evident on the iPad's greater real estate. Even the text in an e-book is crisper, high-def is sharper and photos are crystal clear.
The visual improvements extend to newly enhanced graphics processing, as well as a better photographic experience. Apple junked the iPad 2's primitive rear-facing camera in favor of a new one with a 5-megapixel sensor, plus optics and features borrowed from the iPhone 4S that include image stabilization and the ability to shoot full hi-def video. And it's introducing a $4.99 iPad version of its popular iPhoto Mac app that, combined with the stunning screen, makes editing and sharing photos a pleasure.
In a week of using the new model, I found battery life to be comparable to the iPad 2. That doesn't sound like big news, but it is. That's because the new edition introduces support for the power-hungry 4G data networks known as LTE that are being rolled out in the United States by Verizon and AT&T.