Munster, Racing 92 and the Ospreys will take on holders Saracens in the pool stage of the 2019-20 European Champions Cup.
Stephen Larkham has agreed to a new challenge with Irish province Munster, signing a deal until June 2022.
Munster gave it a great go, but Leinster have the chance to be crowned Pro14 champions once again.
A pitch invader who confronted Saracens' Billy Vunipola has been banned from all home fixtures by Munster.
After Billy Vunipola was confronted by a fan in a Munster shirt on Saturday, the Irish province distanced themselves from the supporter.
After the controversy surrounding his support for Israel Folau, Billy Vunipola declared himself "grateful" to be playing for Saracens.
Michael Rhodes and Billy Vunipola scored tries but Owen Farrell's 22 points from the tee were key for Saracens against Munster.
Leinster will be led by the fit-again Johnny Sexton when they take on Toulouse in Sunday's European Champions Cup semi-final.
Munster are not optimistic over their chances of being able to count on Joey Carbery against Saracens in the Champions Cup on Saturday.
Edinburgh's Pro14 play-off hopes hang by a thread after a damaging home defeat to Ulster, who extended their own domestic season.