[url=http://yaraon.blog109.fc2.com/blog-entry-17363.html]ufotable is going to be animating Fate/Stay Night.[/url] They were the ones who did the Fate/Zero adaption. No word on what it actually will be. Could be another go at the Fate route (which could actually happen, based on Saber's popularity in Japan), or it could be the long awaited Heaven's Feel Route. This is -blam!-ing amazing news. ufotable probably won't do a perfect job, but it is a much better than DEEN. To increase your excitement, watch the OP ufotable did for the Realta Nua Heaven's Feel route.
I've read that people who saw the preview in Japan are saying it's a Heaven's Feel adaption. Makes sense to me, since it's the only route left to be adapted.