Apple TV Universal Search Feature Expands to FOX NOW, FXNOW, and NAT GEO 

As of today, searching for content on the Apple TV will encompass the aforementioned apps along with FOX NOW, FXNOW, and National Geographic. Apple also expanded universal search to include PBS and PBS Kids in January.

Source: Apple TV Universal Search Feature Expands to FOX NOW, FXNOW, and NAT GEO – Mac Rumors