Yesterday at the Apple WWDC, Apple announced quietly (actually, I don't even think they said it, but it was on a slide) that DuckDuckGo as a search option is coming to Safari.
DuckDuckGo confirmed it on Twitter and it is actually listed on the OSX Preview page under the "New features to protect your privacy." Where it says "You can also now search the web using DuckDuckGo, a search engine that doesn’t track you."
As I said yesterday, this is a big win for DuckDuckGo - although the default search option won't be DuckDuckGo, users can easily change it to DuckDuckGo if they want.
Zac from DuckDuckGo said in the DuckDuckGo Forums:
We have our community to thank for their support over the years. So thank *you* :)
Congrats to DuckDuckGo!