A few days ago, the map showing the shape of the upcoming track for the Relay Weekend from Saturday June 10 to Sunday June 11. There's a total of 38 sims, including the permanent American Cancer Society and American Cancer Society 2 sims.
The following is the planned schedule for the track
May 23: sims appear on the map
May 24: Designers have access to the sims
May 27: Teams have access to the sims
June 8: Builds need to be completed by this date
June 9: Campsite Badges
June 10: Relay Weekend
June 11: Relay Weekend
June 14: The "Flood Party"
June 15: Sims will be closed after Midnght