In a recent Switched On column about the iPad, I talked about how Apple can lavish “a level of favoritism that Google and Microsoft can never have for any given device running its licensed software.” Keeping the software consistent has been one of the hallmark’s of Apple’s iOS device appeal, but there is also something to be said about keeping the industrial design relatively consistent as Apple has done between the iPhone 4 and 4S and now between the iPad 2 and third-generation iPad. I don’t expect that this will be the last form factor revision for either device although Apple has stayed very faithful to the current designs of the iMac and Mac Pro line for years.
Particularly for these mobile products, keeping a consistent form factor amplifies the advantage that Apple has versus competitors in the accessory-rich tablet and smartphone markets. Obviously, every case-maker breathed a sigh of relief when it saw the dimensions of the latest iPhone and iPad did not stray from the previous generation. But there are also a large number of keyboard clamshells, stands, mounts, clips, docks and all manner of other accessories. By preserving continuity across iDevice generations, Apple may forfeit some excitement that comes at the differentiated shape of a new thing, but it gains in preserving the consistency of the platform (in the broadest sense) with a device that hits the ground running in a ready-made accessory ecosystem, one where the hardware may even be optimized ahead of the third-party software.