Xiaomi's Mi 5X was overshadowed by the Mi A1, even though both devices were, for all intents and purposes, the same. A leak has surfaced that suggests that the Mi 5X's successor, the Mi 6X, will adopt the same vertical dual rear camera placement seen on the iPhone X.
https://www.notebookcheck.net/Mi-6X-to-feature-iPhone-X-esque-dual-rear-camera-placement.273084.0.html