For a literature-focused list of items entering the US public domain on 2026, Standard Ebooks has 20 ebooks prepared for release on January 1: https://standardebooks.org/blog/public-domain-day-2026
I don't think that they are allowed to prepare copyrighted items for release in advance of them being in the public domain.
I don't think that they are allowed to prepare copyrighted items for release in advance of them being in the public domain.