Worcester have signed former South Africa centre Wynand Olivier.
Wales international Jonathan Thomas has been forced to retire from rugby at the age of 32.
Worcester have signed Ireland international lock Donncha O'Callaghan from Munster on a two-year contract.
Bristol flanker Marco Mama has joined Aviva Premiership new-boys Worcester on loan until the end of February.
Aviva Premiership champions Saracens will open the defence of their title at home to the Sale Sharks on October 17.
English clubs say they will allow their players to compete at next summer's Olympic Games as part of Great Britain's Sevens team.
European Challenge Cup holders Gloucester will face local rivals Worcester Warriors in the 2015-16 competition.
Dewi Morris reflects on a remarkable Championship play-off between Worcester Warriors and Bristol.
Worcester secured a dramatic Premiership return after drawing 30-30 with Bristol to win their play-off on aggregate.
Worcester director of rugby Dean Ryan admitted he was “shocked” as his team secured a spectacular return to the Premiership
Dewi Morris is expecting Wednesday's second leg of the Championship play-off to match the standard of the Premiership.
Worcester claimed a thrilling 29-28 victory over Bristol in the first leg of the Championship final at Ashton Gate.
Bristol suffered a double blow as Gavin Henson and Ryan Jones were injured in the narrow defeat to Worcester.
Love or loathe the play-off structure, the Championship final will deliver fantastic theatre, says Dewi Morris.
Scotland youth international Jack Cosgrove will join Edinburgh next season from Worcester.
Worcester Warriors have completed the signing of flanker Sam Lewis from Ospreys.
Worcester’s Agustin Creevy has been appointed skipper of Argentina for the forthcoming Rugby Championship.
Leeds Carnegie have announced the capture of former England forward Chris Jones on a two year contract.
London Welsh have signed former England lock Dean Schofield for next season.
Edinburgh have completed the signing of Irish prop John Andress from Worcester Warriors on a two-year deal.