It is unknown if the new anime will be a continuation of the 90s TV anime, giving us a proper anime adaptation of the Jinchu Arc, a brand new adaptation of the manga's original Shonen Jump run, or an adaptation of the currently ongoing Hokkaido Arc from the new manga serialized on Jump SQ. Same thing applies with its cast and staff, if we will get the same cast and staff back from the 90s anime or the later OVAs.
[Source: Anime News Network]