Episode 3 Act II is now here, bringing a new agent, Battle Pass, and balance changes to Valorant.
According to leaks from the new patch, we'll soon be able to five-stack at any rank. As it is now, you can only queue with one other player at the Diamond 3 rank and above.
Of course, five-stacking will come with a downside. You'll reportedly receive less RR if you go in with a five-stack as opposed to queueing solo or with one other player.