In a Weibo post, Lei Jun, Xiaomi's founder, announced that the official Mi online store will start selling the phone as early as today. The flash sale begins at 8PM local time and as far as we can tell from the post, it's the second one for today.
Unfortunately, the 10GB version is still nowhere to be found and the store is offering the 8GB/128GB and the 6GB/128GB configurations only. The 6GB model will sell for CNY 3,199 ($459) while the asking price of the 8GB alteration is CNY 3,499 ($502). Just make sure you are one of the first in line because stock won't last.