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 Insightâ€™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.