From a media release:
As a precautionary measure in response to an individual on the Battle of the Blades production team testing positive for COVID-19, Insight Productions has temporarily halted all training and pre-production on the upcoming season to ensure the health and safety of the entire cast and crew. CBC fully supports this decision and, as a result, is postponing the October 15th live premiere of Battle of the Blades Season 6. CBC will provide additional scheduling updates as soon as possible.
A CBC original series, Battle of the Blades is produced by Insight Productions. The series is executive produced by Insight’s John Brunton, Lindsay Cox, Erin Brock, and Mark Lysakowski and is co-created and executive produced by Olympian and World & Canadian Figure Skating Hall of Famer Sandra Bezic.