And that's three for three now. Intel has joined the Windows 10 release party with updated IGP drivers for the new OS, with the version number 18.104.22.168.4256—which I'm sure means something in Lost. Here's a direct link for your convenience.
Besides support for Windows 10 and the shiny new DirectX 12 API, the new driver supports DirectX 11.3, PlayReady 3, and Miracast. It also fixes a bug with improper game scaling for programs running at non-native resolutions on touch-enabled systems. All IGPs in the Iris, Iris Pro, and HD Graphics families are compatible with this update.
Check out the release notes for more information.