Being a big game (than PvZ 2 and 3), it will be slowly released in parts as updates, similar to PvZ 2. When all the content is done, it may continue to be updated to fix things and add minor content and limited-time events.
We are currently working on a small release of an alpha build of the game that will contain 1 day level, 1 night level and a level of the "Vase-Breaker" puzzle.
