Dota2 has teased two new heroes to be released, with the teaser-trailer name of Dueling Fates. They will be released in the 'Dueling Fates Update'. While two Heroes were teased, I only know information regarding the first, one who resembles an armadillo, his abilities could have a: Dash, Cliff Jump, and a Break ability with regards to the cut-seen with Bristleback. 

Source: https://youtu.be/LV1ZV_DG3kI