I searched the issues to see if this has come up before, and it seems not — if it has and I just overlooked it, I apologise.

There's a vast and growing body of prose fiction published chapter-by-chapter online, constituting a single work. The current extant types (Book and BookSeries in specific) don't quite seem to cut it, given the nature of serialised fiction. Each discrete update/chapter may be a more-or-less standalone short story or novella, or a short story or novella that constitutes part of a series (think modern TV series). There is a generic CreativeWorkSeries Type, but it seems to mostly exist to group together BookSeries, TVSeries, etc.

Granted, quite a lot of the really popular series go on to be published as books, but in those cases, the final published books and the original serial vary somehow, or at least the chapter numbering is different.

I think mirroring TVSeries and applicable properties would form the bulk of the work. I personally think there ought to also be a collectedAs property with an expected type of Book, and a corresponding serialisedAs property for Book, and a originallySerialisedAt property for Book. Specifying in which volume a specific WebSerialChapter was published might or might not need a new property — maybe isPartOf would do?

Another alternative is having a WebSeries Type, with a format property expecting a WebSeriesFormat Type (comprising Book, Podcast, Video, etc.)?

I don't know, maybe this is too niche a concern. Figured I'd float it anyway. Apologies for any (n)etiquette gaffes, first time trying something like this!