Pretty sure M$ is stopping sales of XP in June, not support.
They'll still sell the 'downgrade license' to OEMs, though... Although they would stop selling boxed copies of XP to stores, those count for an almost insignificant portion of all OS sales. something like 90%+ is bundled with the hardware, since 'normal' people don't upgrade an OS, they use what came with the computer 'for free'.