The upcoming movie for Violet Evergarden which had been delayed multiple times because of the ongoing coronavirus pandemic, has revealed the confirm date for the premiere and they also released the new trailer for the upcoming film. The movie will be released on September 18, 2020. You can watch the trailer below.
You can also use your advance ticket “Mubichike Card” (listed as 2020/1/10 open or 2020/4/24 open) after September 18, 2020.
Source: Violet Evergarden Official Japanese Website