The Deltarune Chapter 2 release date popped up at the end Undertale's sixth anniversary stream. On September 17th, 2021 at 5 PM PST/8 PM EST, the next part of the game will appear. Whether Deltarune Chapter 2 will release immediately on Switch or PS4 is unknown, but the game's website updated to coincide with the announcement.
The anniversary stream is available below.
Deltarune Chapter 1 and Undertale are both available on the Nintendo Switch. The Sans costume and Megalovania are available in Super Smash Bros. Ultimate.
Author's Note: I've been looking forward to this for a while now. Need some more good in my week. How about you? Let us know in the comments!