Hello, I'm not part of the game's team, but I'm here to help those who are uninformed on this forum.
Firstly, Day 3 doesn't have a release date. Secondly, there are the game's and creator's social media accounts, where they post a LOT of information about the next update. On the game's official Tumblr, @freakcircusofhorrors, they post WEEKLY about the Day 3 update. And on the creator's Tumblr, @nekoboydreams, he posts things more related to the community and answers questions.
On Tumblr you can find Q&As, comics with more lore, behind-the-scenes information, news, announcements, and much more content created by the game's own team.
Please, seek information from official sources! And help spread the word about these sources. Because there's a lot of misinformation being spread about the game on platforms like TikTok, Instagram, and YouTube.