The plan is to open in September 2019 and more details about the 8 themed lands and some of the specific rides can be found here: https://stroi.mos.ru/interviews/amierikanskiie-ghorki-lietaiushchii-tieatr-i-ghighantskiie-kachieli-chto-zhdiet-posietitieliei-parka-ostrov-miechty