There are hundreds of "revelations" Smith received that are not canonized, neither is the JST. I do not see how the impact of Wayment's future article will spill over into a re-evaluation of the the AoF#8.
That said, the entire book which contains Wayment's article promises to have break new ground on how Joseph Smith produced scripture. I think the chapters on the Book of Abraham may be even more controversial for believers than those on the JST. Here is a list of the chapters in the forthcoming
Producing Ancient Scripture: Joseph Smith's Translation Projects in the Development of Mormon Christianity I do have the say the price on this book is ridiculous. $70.00 for a hardcover?
Mormon Canon of Scripture Short Citations to the Joseph Smith Papers Contributors
1. Introduction Michael Hubbard MacKay, Mark Ashurst-McGee, and Brian M. Hauglid.
PART I: CONTEXT AND COMMENCEMENT
2.“By the Gift and Power of God”:Translation among the Gifts of the Spirit Christopher James Blythe
3.“Bringing Forth” the Book of Mormon:Translation as the Reconfiguration of Bodies in Space-Time Jared Hickman
4. Performing the Translation: Character Transcripts and Joseph Smith’s
Earliest Translating Practices Michael Hubbard MacKay
5. Reconfiguring the Archive: Women and the Social Production of the Book of Mormon Amy Easton-Flake and Rachel Cope
PART II: TRANSLATING THE Book of Mormon
6. Seeing the Voice of God: The Book of Mormon on Its Own Translation Samuel Morris Brown
7. Joseph Smith, Helen Schucman, and the Experience of Producing a Spiritual Text: Comparing the Translating of the Book of Mormon and the Scribing of A Course in Miracles Ann Taves
8. Nephi’s Project:The Gold Plates as Book History Richard Lyman Bushman
9. Ancient Plates and Modern Commandments: The Book of Mormon in
Comparison with Joseph Smith’s Other Revelations Grant Hardy
PART III: TRANSLATING THE KING JAMES Bible
10. The Tarrying of the Beloved Disciple: The Textual Formation of the Account of John David W. Grua and William V. Smith
11. A Recovered Resource:The Use of Adam Clarke’s Bible Commentary in Joseph Smith’s Bible Translation Thomas A. Wayment and Haley Wilson-Lemmon
12. Lost Scripture and “the Interpolations of Men”:Joseph Smith’s
Revelation on the Apocrypha Gerrit Dirkmaat
13. Translation, Revelation, and the Hermeneutics of Theological Innovation: Joseph Smith and the Record of John Nicholas J. Frederick
PART IV: PURE LANGUAGE, THE BOOK OF ABRAHAM, AND THE KINDERHOOK PLATES.
14.“Eternal Wisdom Engraven upon the Heavens”: Joseph Smith’s Pure Language Project David Golding
15. “Translating an Alphabet to the Book of Abraham”: Joseph Smith’s Study of the Egyptian Language and His Translation of the Book of Abraham Brian M. Hauglid
16. Approaching Egyptian Papyri through Biblical Language:Joseph Smith’s Use of Hebrew in His Translation of the Book of Abraham Matthew J. Grey
17. “President Joseph has Translated a Portion”:Joseph Smith and the Mistranslation of the Kinderhook Plates Don Bradley and Mark Ashurst-McGee