The 2016/17 Guinness PRO12 final will take place at the Aviva Stadium as the league finale moves to another iconic arena.
Bristol have signed Wales prop Ryan Bevington from Ospreys on a two-year contract.
Sam Underhill is likely to miss the first half of the season as he prepares to face surgery for a shoulder injury.
Wales flanker Dan Lydiate is recovering as expected after sustaining shoulder and hamstring injuries against England in May.
Eddie Jones will not be able to select Sam Underhill for England's autumn Tests against South Africa, Fiji, Argentina and Australia.
Centre Owen Watkin will miss the majority of Ospreys' upcoming season after suffering a serious knee injury in training.
Reigning champions Connacht will launch the defence of their Guinness PRO12 title against Glasgow Warriors.
Eddie Jones revealed he is still waiting for the RFU's decision on whether he can select Welsh-based Sam Underhill.
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Barbarians v South Africa
5th November 2016