Northampton Saints, having captured their third Premiership title in June by defeating Exeter, will launch their title defence at home against Newcastle Red Bulls on the opening weekend of the new season on 25 September. Four other fixtures are scheduled for the opening weekend, with Harlequins hosting Bath and Exeter at home to Gloucester on the Saturday, followed by a Sunday match between Leicester and Saracens.

The 2026-27 season marks a structural milestone for English rugby's top division, as promotion and relegation have been officially removed and formalised into the league regulations. This change solidifies the shift toward a franchise-based operating model, alongside plans for league expansion anticipated by the 2029-30 season, as the sport moves away from the traditional open-promotion system that had governed the division.