The Redmi K20 is available to order from today (May 24, 2019) after a manner of speaking. Those who wish to pre-order the new flagship phone need to pay a deposit of 100 yuan (about US$14.50) on Mi.com or JD.com. They can then pay the balance on May 28.
https://www.notebookcheck.net/Redmi-K20-now-available-for-deposit-based-pre-order-in-China.421571.0.html