The entire season 7 was filmed in 2014 but was set in 2017. There are several predictions about life in 2017: Use of holographic phones (Did not come true) The collection of personal information through keywords via various platforms to cater needs to individuals using the service (came true) Use of television as video calls (came true but not popular)-They predicted that the Chicago Cubs would win the 2016 World Series
Part of the reason this season was set in the future was due to the fact that Amy Poehler (Leslie Knope) was strongly against having to act pregnant for the season.
In April and Andy's kitchen you can see a Knope 2012 sticker from when Leslie won city council.
Adam Scott (Ben Wyatt) & Marc Evan Jackson (Trevor Nelsson) also worked together on The Good Place (2016) as Trevor & Shawn respectively. Both shows were created by Michael Schur.
Werner Herzog's character mentions he wants to move in order to be closer to Disney World. Roughly five years later, Herzog appeared in The Mandalorian (2019), part of the Star Wars universe run by Disney.