Night 2 will arrive somewere in September, but most likely before the end of it.
There is a chance it will be delayed, but that depends on if they have issue with it during testing.
The Night 2 is gonna be released for the 2.0 update on Patreon, because they had to split the updates in two, so right now Patreon is only currently able to play the new stuff thats in the Arcade mode, while the rest of the update will arrive later.