Xiaomi 2020 launches leaked: All Mi, Redmi and Poco phones listed
https://www.indiatoday.in/technology/news/story/xiaomi-2020-launches-leaked-all-mi-redmi-and-poco-phones-listed-1661293-2020-03-30

April:
MIX Alpha: The MIX Alpha concept phone could finally go on sale in China in April.

August:
MIX 4 series: Xiaomi will launch the upgraded MIX 4S models this year with new 5G chips and possibly better cameras.
MIX Zero: This could be a concept smartphone with probably no buttons or probably a folding display.