Scotland forwards Ross Ford and Grant Gilchrist return to face a Gloucester side without captain Tom Savage.
Edinburgh score three tries in the last eight minutes to add a bonus point to their 43-10 win over Connacht.
James McKinney chalks up 21 points as Ulster cruise to a 41-17 bonus-point victory over Edinburgh at Ravenhill.
Ben Toolis switches to London Irish, Alun Walker stays at Nottingham, while Robin Hislop joins Rotherham from Edinburgh.
Edinburgh head coach Alan Solomons says it is "absolutely critical" that all Pro12 matches have a television match official.
Greig Tonks, WP Nel and Cornell du Preez score tries as Edinburgh hold on to beat Zebre in the Pro12.
Scotland and Edinburgh Rugby wing Tim Visser is ruled out for up to four months because of a leg fracture.
Edinburgh's Tim Visser misses Scotland's three-day training camp in Glasgow through injury as he undergoes a scan.
Willem Nel's late try helps Edinburgh pick up their second win of the Pro12 season with victory over Treviso.
Four second-half tries secure Perpignan a bonus-point victory against Edinburgh in the Heineken Cup.
Mark Dodson says Scottish Rugby is "not frightened" of the prospect of planned changes to European club competition.
Cornell du Preez and Omar Mouneimne say Alan Solomons is looking to turn Edinburgh into a mistake-free machine.
Edinburgh defence coach Omar Mouneimne says team boss Alan Solomons is the Sir Alex Ferguson of rugby.
Captain Greig Laidlaw says Edinburgh have answered their critics with a 29-23 Heineken Cup win over Munster.
Matt Scott and Tim Visser score tries and Greig Laidlaw kicks 19 points as Edinburgh stun Munster in the Heineken Cup.
Centre Sam Beard is to join Edinburgh until the end of the season after the New Zealander leaves Bay of Plenty.
British and Irish Lions prop Gethin Jenkins returns after four months out injured in the Cardiff Blues' win over Edinburgh.
Former Scotland captain Andy Nicol fears for the future of professional rugby in Scotland amid the Heineken Cup row.
Scottish Rugby chief executive Mark Dodson thinks a solution will be found to ensure Scottish clubs take part in Europe next season.
Edinburgh lock Perry Parker is expected to be out of action for around four months following shoulder surgery.
Features & Analysis
Former Scotland scrum-half Mike Blair casts an eye over the side to face South Africa
Newcastle scrum-half Mike Blair assesses Scotland's chances against Japan
Scotland, Ireland and Wales have to move forward with less income in a new European landscape, says John Beattie
Northampton's world-class signings should help them win at underpowered Gloucester, says former England centre Jeremy Guscott
Newcastle scrum-half Mike Blair expects an exciting season for both Edinburgh and Glasgow
Can Edinburgh rise to the challenge of Glasgow in the coming rugby season? Asks John Beattie
"When I watch rugby it's obvious that the hits are harder and the brain trauma is worse than it used to be"
Scotland back row forward David Denton hopes to feature against South Africa after recovering from a knee injury