In a move sure to disappoint conspiracy theorists and the three guys still using Windows Vista because they really like the desktop gadgets, Blizzard just announced that its contemporary games will no longer support Windows XP or Vista. While this isn't exactly surprising, it's been a long time coming. The affected titles are World of Warcraft, StarCraft II, Diablo III, Hearthstone, and Heroes of the Storm.
Blizzard's support for Windows XP over the years and the decision to include a DirectX 9 render path in many of its games were likely meant to please the large Chinese audience still using that OS. In fact, as recently as last April, Windows XP was still the second-most popular OS in the country, and still makes for nearly 10% of world-wide web traffic. Users of Blizzard's current games worldwide will finally have to upgrade if they want to keep playing, though.
While Windows Vista supports roughly the same technologies as Windows 7, its market share is so infinitesimal that it gets lumped into "other" on NetMarketShare's pie chart, trailing even Linux. Microsoft has already terminated support for Windows Vista, so maybe it's time to find a new desktop clock app.