Future Android 8 (未来の人造人間8号 Mirai no Jinzōningen Hachi-Gō) was the alternate future timeline counterpart of Android 8.
Same as his main timeline counterpart.
Dragon Ball Super
"Future" Trunks Saga
Later, when Future Trunks was fighting Fused Zamasu after Vegito defused, all living beings on Earth gave their energy to him. Android 8 is seen giving his energy to Trunks. Soon after Zamasu's physical body was destroyed, he faded into the sky and unleashed an attack that spread around the Earth during which Future Android 8 and the other people were killed. His soul was erased when Future Zen-Oh erased the future timeline to kill Infinite Zamasu once and for all. His soul still exists in the second alternate future timeline created by Whis.