Derek Hough will return to Dancing With the Stars in Season 29

dailymail.co.uk:

Four years after leaving ABC's hit reality series Dancing With the Stars, Derek Hough is slated to return, in some capacity.Hough, 35, a professional dancer and older brother of Julianne Hough, who won the MirrorBall trophy a record six times, was a dancer on the show from 2007 to 2016.He has since been keeping busy as a judge on NBC's World of Dance alongside Jennifer Lopez and Ne-Yo, but Good Morning America teased on Twitter that Hough will make his DWTS return, but the full reveal won't happen until Tuesday.

Derek's return:Four years after leaving ABC's hit reality series Dancing With the Stars, Derek Hough is slated to return, in some capacity Reveal:He has since been keeping busy as a judge on NBC's World of Dance alongside Jennifer.