According to a recent rumor from the reliable source Digital Chat Station on Weibo, Redmi is reportedly developing three different smartphones, each featuring a remarkable 10,000 mAh battery.
These devices will utilize a single-cell battery configuration, which unfortunately means they are unlikely to be available in the EU. The batteries will support 100W wired charging. The smartphones will belong to both the mainstream Note series and the performance-oriented K series.

In recent years, the Redmi Note models in China have often differed significantly from their international namesakes, or have launched several months ahead of their global release. The K series, which is exclusively available in China, occasionally features devices that are later released internationally under the Poco brand. This raises the possibility that we might see a Poco smartphone equipped with a 10,000 mAh battery in the upcoming months, but likely only in Asia.
Source (in Chinese)