Search is still there and still a huge part of the product. I think they've come to the realization that the future of personal search is in making it so you don't have to use search in the first place -- 9 times out of ten the information will already be there in front of you when you open the app.

You might want to perform a search a few times a month, but you'll want to use the new "What's next" view a few times a day.