News should appear in the Activity in the game, intermixed with the friend activity:Do you mean the 'news' tab for just a single game? It's so sporadically used by devs that it's useless IMO, but you can find it by going
Select game --> Community Hub (or if on a store page, View discussions)--> News Tab
The news tab lists developer updates as well as related news from certain news sites, I think.
Otherwised yeah the news tab also has other news about it.