New Game Intro.
https://www.youtube.com/watch?v=KyR5-k9i614&t=28s

New Menu.

New Credits room.
In the credits room, there is a tab with tutorials on how to get extras.

3 New Fights.

RERUN V.E.H.E.M.E.N.T.
(Did you not like the ending where you die for SF!Chara? Well, now you can kill her.)

R.E.A.N.I.L.O.V.A.N.I.A.
(Have you ever thought about what the fight against UF!Sans and FS!Papyrus would be like without SF!Chara?

Now you don't have to imagine, I'll take her out of the fight.)

Triple The P.S.Y.C.H.O.T.I.C.
(You killed them to the point where they went crazy.)

Some Sprites are Changed.

(SF!Chara)

(Kings)

• Some attacks have been changed.

• Blue soul physics has been changed.

• When you enter the fight it shows the name of the song playing along with the name of the author.

• Diagonal movement of the red soul has been changed.

• New debuff on Vehement (BR / Burn).

  It works similar to karma, but it reduces faster if you are moving, non-fire attacks only add 1 point to BR, while fire attacks add more.

• F4 now enables Fullscreen.

(There must be more things I changed, but I don't remember.)

Part two of this update will be related to Encore mode.
And when will it be released?
I don't know, maybe in 8 years, so just sit back and wait.