After five minutes of combat, that storm circle starts to close in. (allgamers.com)
In addition to that, a number of other tweaks have been made to the mode in general, including a reduction of the bus height, a bigger storm circle, less storm damage, and more, but the main changes have been done to Thanos. (dualshockers.com)
Epic has reduced the height of the bus when dropping, made the initial storm circle bigger and reduced storm damage in the early game. (eurogamer.net)