Currently, the A Brickfilm Christmas page has the information for the 2018 community collab "25 Brickfilms of Christmas" on it. However, the 25 Brickfilms of Christmas is a different collab. While started around the same idea (that is, "let's have another Christmas collab"), it's not "A Brickfilm Christmas". It's run by someone else, organized entirely differently, and isn't a sequel to A Brickfilm Christmas.
I think this warrants its own page. May I ask why it was created as an addition to the other page?
Initially my thinking was that is was branded as being related and that it wouldn't neatly fit a "Film page" template, but I think you're right in that it does warrant being split into a page along the lines of the Bluntmation 7/7 Project