I recently expressed a lack of surprise that
Internet Explorer 9 will almost certainly not be supported on Windows XP. In Redmond's words, a "modern browser" needs a "modern operating system," and Windows XP doesn't qualify. Much to my surprise (well, not really, I know that XP is still used and, apparently, loved by many), many doubted my characterization of XP as "obsolete," and they questioned my lack of surprise at this decision.
Simple things first. Windows XP is not a new operating system. Windows XP was released in 2001, and it has been succeeded by not one, but two newer operating systems: Windows Vista, and Windows 7. The other major desktop platform vendor—Apple—doesn't even begin to support anything that old, and the company routinely restricts its software compatibility to only the most recent version or two of its operating system.
Now, it's true that software is not like physical goods; while the ravages of time may make hardware break down, Windows XP works as well today as it did when it was new. Better, if you consider the extensive capabilities added in Service Packs and free downloads. But the computing world does not stand still; working as well as it did when it was new means that Windows XP hasn't kept up with computing's advances. The next generation of hard disks (or indeed, current generation, for Western Digital users), for example, are at risk of suffering
severe performance penalties on XP systems. To get the best from the technology that for many has replaced spinning disks—the solid state drive—requires support for the TRIM command, found natively only in Windows 7. XP similarly lacks any built-in support for Blu-ray discs.