Welshman Nigel Owens headed a list of 12 referees to officiate at the World Cup, which was announced by World Rugby on Tuesday.
All Black loose forward Jerome Kaino has committed himself for the next three years to New Zealand, the Blues and Auckland.
NEWS: Toulouse General Manager Guy Noves expressed his optimism that centre Gael Fickou will be fit in time for the World Cup.
England centre Manu Tuilagi looks set to miss the rest of the season through injury, but should be fit for the World Cup.
INTERVIEW: Irish great Brian O'Driscoll said that it was officiating and not the laws of the game that needed to change.
The frenzied finale to the Six Nations comes as a timely reminder to the Southern Hemisphere giants ahead of this year's World Cup.
REACTION: Ireland scrumhalf Conor Murray says his side's Six Nations triumph shows they are ready to make a major impact at the World Cup.
REACTION: Wales coach Warren Gatland said his team will look ahead with confidence to this year's World Cup.
REACTION: England captain Chris Robshaw feels Twickenham will be a real fortress at the World Cup later this year.
NEWS: A record number of tickets will be sold for this year's Rugby Union World Cup in England, the head of the sport's ruling body said.