The Flying Fijians will take on France, Italy and Scotland in Group A, with England, Ireland, Wales and Georgia to contest Group B.
The final round will be a series of crossover matches against the team with the equivalent placing in the opposite pool.
Fiji have not played four consecutive tests against tier one countries in the professional era and CEO, John O'Connor, said their participation would be a historic milestone.
"It will be a challenge for the boys but you know we have been crying over [wanting] more test matches against tier one for so long," he said.