A little less than two months ago the Piccolo Daimaō arc began airing with its new Korean dub on AniBox.
Recent scheduling updates have confirmed the premier of episode 123 with the new dub as airing tomorrow (October 5th), which will mark the beginning of the Piccolo Junior or 23rd Tenkaichi Budōkai arc of original Dragon Ball.
Dragon Ball originally premiered in South Korea in the 1980s with the original Korean dub. It also aired on Champ TV.
The original series hasn’t aired for a long time before this rerun with the new dub however.