For those of you concerned, it appears we will have updates and support for Windows XP until spring of 2014.
Vista Mythbusters #3: Will Microsoft dump XP to push Vista? by ZDNet‘s Ed Bott — Conspiracy theorists believe Microsoft is plotting to drop support for Windows XP as soon as Vista comes out, thereby forcing Windows users to upgrade or else. The reality? You can count on at least four years of support for XP. I’ve got the details and the exact dates.