For informational queries a new tag is appearing just below the description of shorter articles in search results to signal that it can be read in under 5 minutes.
Shorter articles appear to be ranking well though Google just said they did not care about article length?
Personally, when I'm searching for something specific and I land on a 2500 word article, I'm not often tempted to read it to find the bits I want. This is especially true when the second pargraph is bolded and the conclusion is 500+ words repeating what's been said.
The longest "short" article I've seen that has the new tag was around 850 words.
Don't change anything, yet. It might be an 8 minute tag next week, or a 2 min tag nex month. Google is, however, aware that some people want short answers, not novelas.