Intel explained about fail on the CES 2012. If you didn't see this fail check this vid :
Intel want to show that new CPU(Ivy Bridge) don't have problems with DX11 but on the presentation they show not a game but a video from this game (F1 2011). After this accident on the web we can find comments about the new Intel processors have problem with DX11 (not supported). This is why Intel make a close conference for juornalist where they show new Ivy Bridge in action - yes, they don't have any problem with this game and fully supported DX11. So why they show a video, not a fully playable game ?? Intel said the presentation is made at the last moment and they want to avoid problems with game - not with processors. There is a prove about Ivy Bridge don't have any problems with DX 11 :
probably in this text it a lot of mistakse, if you find one (or two, or more ;] ) please write about it in comments !