Filed under: Desktops, Laptops, Tablet PCsRegardless of how Tablet PCs have actually done in the marketplace, Microsoft has always been a staunch proponent of touch interfaces, and it looks like the next version of Windows, currently under the codename Windows 7, will bundle in multi-touch features like those found in the iPhone and Microsoft's own Surface. The news comes from Microsoft engineer Hilton Locke, who blogged about Dell's multi-touch