Season 4 will begin immediately when the servers come back online, so you should be ready to go on Sunday morning. Forbes Games will explore the new Battle Pass, map modifications, and challenges. I hope Epic will bring back good challenges, loading screens, and secret Battle Stars or cash, but I'm not optimistic.
SypherPK's Icon Series skin won't be part of the Battle Pass. In the new skin's image is a scoped AR or tactical rifle, so expect that as a new weapon in Chapter 4, Season 4. There are also tonnes of chrome and chrome tornadoes that might look like monuments on the map. Also, balloons should float over the map.