Question: When does series 6 of the next step start?
Disambiguated questions and answers: question: When does series 6 part 1 of the next step start?
When does series 6 part 2 of the next step start?
answer: September 29, 2018
March 2, 2019
Natural Questions answer: in Canada in September 2018 (from the Wikipedia article "List of The Next Step episodes")