Fortnite's mysterious cube is slowly moving across the map (Updated)

Update 3: The big mystery cube is now moving through the map, though very slowly. Its current rate, according to Fortnite Battle Royale News is one 'step' every hour and 43 minutes. See the embedded video above, showing the cube slowly turning over as it crawls toward a likely Fortnite Season 6 launch. 

Update 2: At 2:04 pm PT, the purple lightning summoned a massive purple cube. It's covered in strange symbols, and if you touch the cube it sends you flying. Standing near it slowly fills your shield up, and shooting it sends out sparks of lightning. 

Update: It turns out the lightning is striking the same mountaintop in the desert region with greater and greater frequency. On this mountaintop is (or was) a circular arrangement of cacti that the lightning has been permanently destroying one by one every hour or so. With one left, chances are something big is going to happen in Fortnite, and soon. We'll be keeping watch and update this story as soon as we know more. 

Original Story: The rift that opened over Fortnite's map in the lead up to Season 5 has started closing, but that doesn't mean everything is going back to normal. As of update 5.30, the rift has shrunk significantly and turned a malevolent shade or purple. Even more eerie are the lightning strikes players are reporting. Take a look at the footage capture from LootLake.net below. 

Much like Season 3's meteor shower, purple streaks of lightning are landing all over the map, and seemingly at random. With Tomatohead reappearing as the overlord of a saucy cult, chances are that something bigger is happening soon. At the very least, this marks the beginning of a thematic shift towards Season 6. Time sure flies, eh?