During the 2017 Jump Victory Carnival a booklet was handed out showcasing an official Dragon Ball Super side story. This has been happening since Dragon Ball Super first aired in 2015, with the first booklet showing fans details of the restoration for the Kai planet after Buu. While the second side story that was released showcased the Pilaf gang and their wish for youth, which explains why they are children now.
However, this year's two-page manga side story highlighted the aftermath of the Zamasu and Goku black arc. As a result, there is a chance that Dragon Ball Super fans may see Future Trunks return in the series later on. According to the side story, both Trunks and Mai were preparing to permanently stay at Bulma’s, until Gohan unknowingly changes their minds.
Gohan visits the two and tells Trunks that he would like to go to future and meet the Bulma there, in peaceful times though. As a result, Trunks then changes his plans and decides to go back to the future. Although, Trunk’s never admits to Gohan that he planned on staying and acts as if he always intended to go back all along. Therefore, this is the real reason why Trunks and Mai decided to return to the future just before Zamasu appeared.
This also means that if Gohan didn’t intervene, Future Trunks may be competing in the current arcs Tournament of Power. This is because if Trunks was there in the present, Goku would have had no reason to resurrect Freeza. Trunk’s Rage power up was quite popular, mixing his Ascended Saiyan form with Super Saiyan Blue. Fans would have loved to of seen Future Trunks competing in the Tournament of Power, however, that doesn’t mean they won't see him again.
It is possible that Gohan will want to travel to the future to visit the Bulma there like he said. In addition, there will be a lot more Dragon Ball Super to come in the future, which could result in Goku needing Trunks’s assistance. Therefore, fans are likely to see more from Trunks later on in Dragon Ball Super at some point.
You can read up on the synopsis for Dragon Ball Super's current arc below:0comments
"According to an invitation that Goku gets, Zen-Oh (Omni King) is starting a martial arts tournament between all the universes called "Chikara no Taikai" (Tournament of Power). But it is the beginning of universal destruction. Something awaits the winners and losers of this tournament. What will become of this fierce team battle between each universe's elite warriors?"
Dragon Ball Super's “Universal Survival” saga is part of the recent simulcast agreement that sites like Crunchyroll and Funimation have scored. Dragon Ball Super airs on Crunchyroll Saturdays at 7:15 p.m. CST. Toonami airs the English dub on Adult Swim Saturdays at 11:30 p.m.