A new Pokemon Go update arrived today and it has one notable change.The official patch notes, posted on developer Niantic's website, explain that the update changes "distance-tracking to better account for GPS drift." That's the term for when your character shifts location due to the GPS service on your phone not always working as well as it should.As Forbes explains, small shifts can have a big affect on Pokemon Go, as egg-hatching and other features are tracked using GPS.