The Google Photos app will now serve up cards in the “assistant view” that urge you to “rediscover this day,” and they can include photos, photo collages, or videos. The cards will tell you where you were and who you were with on that day, and the app also sticks a little graphic over everything that tells you which year it was from — another little bit that is extremely similar to Timehop.
The first rule of modern photo management services is that, sooner or later, they're going to bring back a feature from Everpix. I used to love this in the defunct service; it makes sense for the Assistant view of Google Photos. It's surprising to me that Apple still hasn't added something like this to Photos (you can search for “one year ago”, but it's not as precise or visible).