The Cube has now moved near Greasy Grove and created a new Rune and Dome over the area. It seems the Cube will repeat this process a total of 5 more times before finally moving to a Lake and activating. What comes after is unknown.
The Cube is once again moving, it has left behind a Rune on the ground.
After days of movement every 1 hour and 43 minutes, the Cube now seems to be surrounded by a gravitational dome which grants the player with low gravity similar to the Hop Rocks.
— Fortnite News • FortniteINTEL.com (@FortniteINTEL) August 28, 2018
This is confirmation of the force-field esque appearance one player spotted on the Cube prior to the current events.
— Rusty Jorgensen (@RustyJorgensen) August 28, 2018
It appears this is the second stage in the Cube event. It is unknown what else is to come, however thanks to game files we know that the Cube has some sort of interaction with a Lake.
The cube will move 6 or so more times and then move to some lake (maybe loot lake?) and then should “turn on”. Turning on might refer to it initially spawning but I’d hope its more interesting than that. pic.twitter.com/bM1DUfcssP
— Fortnite Leakage (@FNLeak) August 25, 2018
According to YouTuber Drift0r, large purple Runes are spawning on the inside of the Cube. It’s possible that these will be left on the ground if the Cube were to move. These are the Runes which are seen on the outside of the Cube and on-screen when a player nears the Cube. It is unknown if there is any meaning behind them or if they are simply for visual appeal.
— Fortnite News • FortniteINTEL.com (@FortniteINTEL) August 29, 2018