For example, a search for [Nexus 6] returns 3 "in the news" results and none of them is from a site currently indexed by Google News. The first result is a Nexus 6 unboxing, the second one is a blog post from XDA Developers that shows how to enable double-tap to wake and the third result is a PocketNow post about re-enabling tethering.
A search for [gifs] returns 3 results from reddit, which is not indexed by Google News:
Back in October, a Google spokesperson said: "We will be pulling from all over the web which means that we will present as diverse a range of voices as possible to ensure we get users to the answer they are looking for."
The downside is that Google sometimes shows non-news videos and threads, but there's a good side to this: Google's news results are more comprehensive and original sources are included.