The phrases “fausses nouvelles” and “fausses actualités” (sometimes even “fausses news”) come up just as frequently in Google.fr searches, I noticed.
That’s the problem with the “Just Google it” mentality, Google translate provides “Fausses Nouvelles” as its first choice, but it’s incorrect.
Using the term “Nouvelles” for news means whoever is writing/speaking isn’t a native speaker and is translating rather haphazardly.
Or maybe it’s some weird Anglicism creeping into the language that I’m unaware of.