According to the recent trailer on discord. Somewhere in September
Viewing post in Fap Nights At Frenni's Night Club comments
I believe i heard it will be around mid or end of September i think ???
Also i want to mention something it about the trailer on patreon about night 2 for some reason it lock for patreon member only last time when they made the trailer of the Christmas special part 2 and posted it on there patreon page it was open for everyone, also i notice this message with the video on patreon"thanks for you patience!" i believe there a reason why the trailer is lock for patreon member only (it only a theory) i think the new arcade mode 2.0 is in there with the trailer however i can't confirm it yet but i think that the reason why the trailer on patreon is lock.
You forgetting that they announced it as well on Discord, and placed it on youtube to see the trailer. So its not locked. The link to the trailer is on the Announcement channel.
When the Christmas special part 2 arrived it was in version 1.8, while the patreon got a updated content of the special and some skins for the arcade mode in the 1.9
Check on Discord, the trailer was both announced for Patreon AND Discord members who have access to the "#Announcements !" channel.
Its locked on Patreon because of spoiler of it, but it got released later for the public on Discord via the announcement. Thats what im getting at about it.
( I should had phrased it better in the other comment )