The Xioami smartphones which have been announced so far does not feature wireless charging support.
In the latest development, Xiaomi has now become a part of Wireless Power Consortium, suggesting that the company's upcoming smartphones will be equipped with wireless charging coils that will allow phones to recharge their batteries through wireless induction. "We are excited to continue expanding Belkin's growing portfolio of wireless charging solutions with the new Boost↑Up Wireless Charging Pad for iPhone 8, iPhone 8 Plus and iPhone X, holding to our mission of helping consumers realize the power of new technology". It is a multinational technology consortium for providing the adoption of the interface standard Qi. Having said that, it is definitely great news for users who have been waiting to see wireless charging in Xiaomi phones.
In terms of hardware, the Xiaomi Mi 7 may be powered by the Qualcomm Snapdragon 845 processor (unannounced) along with two RAM variants i.e. 6GB and 8GB RAM. It might switch from the Mi 6's LCD screen to a Samsung-made AMOLED one measuring 6 inches across.
If the Mi 7 will indeed arrive next year with Qi wireless charging, it's likely that it may a have glass back rather than metal.
The timing of the buzzworthy new publicity campaign is clearly not coincidental, though if iPhone 8 demand is indeed substantially held back by the iPhone X shadow, maybe IKEA would have been better off shelving the marketing operation until early November. This might make the Mi 7 a bit more fragile, but it seems to be a necessary design change to accommodate the feature. The problem with WiPower is that it's not being widely adopted by OEMs since majority of them are already using the Qi standard. It might have been nice to have wireless charging available for the Xiaomi Mi MIX 2, adding to the premium nature of the edge-to-edge screened handset.