what number in the Provocative City Series is this book?

four.

when will this story be published?

Difficult to determine. King's story will ALWAYS be last. If I add another book to series, that will push this beloved story back in the publication line. Rest assured, IT WILL BE PUBLISHED sometime in the future.

will both volumes be available immediately for publication?

Most likely yes.

will the published story have major changes?

Not major, but things will be changed for publication.

Writing on Wattpad is much different than the mainstream writing/publishing community, and the rules/constrictions of writing are slightly different.

will there be an epilogue to the KING story?

Always possible for a novella to be added to the story as an extended epilogue. But not making any promises. =)