Image: Lionel HahnSource: Getty ImagesThe All Blacks have made it clear they are not travelling to South Africa simply to compete. The four-Test series comes as both nations continue preparations for next year's Rugby World Cup, adding even greater significance to the clashes. Luke Jacobson sees series as world rugby benchmarkFlanker Luke Jacobson also believes the series will carry major significance beyond the results. All Blacks reveal ambitious goal before four-Test Springbok showdown. Image: Huw FaircloughSource: Getty ImagesGreatest Rivalry Tour set to shape World Cup build-upAnticipation continues to build around one of rugby's biggest rivalries.