README.adoc in asciidoctor-epub3-2.0.1 vs README.adoc in asciidoctor-epub3-2.1.0

@@ -1,8 +1,8 @@
 = {project-name}: A _native_ EPUB3 converter for AsciiDoc
 Dan Allen <https://github.com/mojavelinux[@mojavelinux]>; Sarah White <https://github.com/graphitefriction[@graphitefriction]>
-v2.0.1, 2024-01-13
+v2.1.0, 2024-02-04
 :project-name: Asciidoctor EPUB3
 :project-handle: asciidoctor-epub3
 :uri-project: https://github.com/asciidoctor/{project-handle}
 :uri-gem: https://rubygems.org/gems/asciidoctor-epub3
 :uri-ci: {uri-project}/actions?query=branch%3Amain
@@ -11,11 +11,11 @@
 
 image:https://img.shields.io/badge/zulip-join_chat-brightgreen.svg[project chat,link=https://asciidoctor.zulipchat.com/]
 image:https://img.shields.io/gem/v/asciidoctor-epub3.svg[Latest Release,link={uri-gem}]
 image:{uri-project}/workflows/CI/badge.svg?branch=main[GitHub Actions,link={uri-ci}]
 
-{project-name} is a set of Asciidoctor extensions for converting AsciiDoc documents directly to the EPUB3 and KF8/MOBI e-book formats.
+{project-name} is a set of Asciidoctor extensions for converting AsciiDoc documents directly to the EPUB3 e-book format.
 
 == Documentation
 
 Detailed installation and usage instructions can be found on the https://docs.asciidoctor.org/epub3-converter/latest/[Asciidoctor Docs site].
 
@@ -51,18 +51,9 @@
 $ asciidoctor-epub3 -D output path/to/book.adoc
 ----
 
 When the script completes, you'll see the file [file]_book.epub_ appear in the [path]_output_ directory.
 Open that file with an EPUB3 reader to view the result.
-
-You may also produce KF8/MOBI file by setting `ebook-format` attribute to `kf8`.
-
-[source,shell script]
-----
-$ asciidoctor-epub3 -D output -a ebook-format=kf8 path/to/book.adoc
-----
-
-When the script completes, the file [file]_book.mobi_ will appear in [path]_output_ directory.
 
 == Contributing
 
 In the spirit of free software, _everyone_ is encouraged to help improve this project.