Oda made a special cover celebrating the arrival of One Piece Chapter 1000.

As you can see below Zoro has three swords:

The swords Oda drew there are:
Wado Ichimonji

Enma

Shusui

Is that a foreshadowing from Oda that Zoro will leave Wano with Enma, Wado Ichimonji and Shusui? Him gaining Shusui means that the Wano citizen recognised Zoro as a second Ryuma especially Gyukimaru who always denied the possibility of returning the sword to him.

*Theory by Fenaker