New Law 9.19

In open play, any player may lift or support a player from the same team.
Players who support or lift a teammate must lower the player to the ground safely as soon as the ball is won by a player of either team.

Sanction: Free-kick

Please note that existing laws 9.19 to 9.25 will be renumbered as laws 9.20 to 9.26.

World Rugby Council notification below

World Rugby – Law Decision – Law 9.19[2]