Valve Software's forthcoming Half-Life 2: Episode Two - and Team Fortress 2 - will support "advanced technology" featured on DirectX 10 graphics cards, it's emerged on Game Informer's website.
While it implies Valve is introducing its Source engine to the new version of DirectX, it's not entirely clear whether that is indeed the case.
According to the site, however, the games will utilise the advanced technology featured on DirectX 10 graphics cards "even" if you're running them on Windows XP - which suggests to us that DirectX 10 features won't appear in Episode Two and TF2.
We've fired off an email to Valve to get clarification.
Game Informer goes on to say that Half-Life 2: Episode Two and Team Fortress 2 will work with DirectX 8, DirectX 7 support possible but not confirmed.