Why isn't there a Joseph Smith Translation of Luke 23:43? According to the book True to the Faith, Luke 23:43 in the KJV of the Bible (and presumably many other translations of the Bible) was mistranslated. 


  There has been much said by modern divines about the words of Jesus (when on the cross) to the thief, saying, ‘This day shalt thou be with me in paradise.’ King James’ translators make it out to say paradise. But what is paradise? It is a modern word: it does not answer at all to the original word that Jesus made use of. Find the original of the word paradise. You may as easily find a needle in a haymow. Here is a chance for battle, ye learned men. There is nothing in the original word in Greek from which this was taken that signifies paradise; but it was—This day thou shalt be with me in the world of spirits: then I will teach you all about it and answer your inquiries. And Peter says he went and preached to the world of spirits (spirits in prison, I Peter, 3rd chap., 19th verse), so that they who would receive it could have it answered by proxy by those who live on the earth. (source)


Yet, there is no Joseph Smith Translation of Luke 23:43. Do we know why this is (i.e., if he knew that it was mistranslated, why didn't he at least note this in his translation of the Bible into English)?
A short answer is (probably not the only potential answer here), there is evidence that the Joseph Smith Translation manuscript had not yet quite reached a state that Joseph Smith felt comfortable to submit to be published before Joseph Smith was killed.  There is evidence Joseph Smith was working on the manuscript up until his death and ample evidence that he and other church leaders had every intention of publishing the new translation very soon, but that Joseph Smith was killed before declaring the manuscript ready to publish.  Thus, there is the possibility of what we now view as &quot;missed retranslations&quot; would have been included in the final manuscript and that the manuscript as we have it now is incomplete as far as what Joseph Smith would have had published.
Also, the first quote listed below, that Joseph Smith did not correct all the verses he could have corrected, for whatever reason.

Some articles on this subject.
From the December 1972 Ensign, an LDS church magazine, an article by Robert J. Matthews, Assistant Professor of Ancient Scripture Brigham Young University states:

It is evident from the manuscripts prepared by the Prophet and his scribes, and also from the statements by the Prophet himself, that he did not correct all of the passages that could be corrected in the Bible. Hence, the new translation is not finished. It is not a perfect Bible.

An article from the 1980 Liahona (another church magazine) with no stated author says:

Although the major portion of the work was completed by July 1833, he continued to make modifications while preparing a manuscript for the press until his death in 1844, and it is possible that some additional modifications would have been made had he lived to publish the entire work.

And then a January 1983 Ensign article, again by Robert J. Matthews, provides even more details than either of the previous two articles on the subject of the possibly unfinished manuscript:

Although the Prophet states that the translation activity was “finished” on 2 July 1833, the manuscript was not ready to be given to a printer. During the remaining eleven years of his life he continued to revise and add to the text and to make other editorial refinements to prepare the document for printing.
...[I]n June 1844, the Prophet lay dead, felled by assassins’ bullets, and the JST was not yet published. The Doctrine and Covenants was nearly ready for a republication at the time of his death and came forth from the press in September 1844. The JST would probably have been next, but the Prophet had been unable to get it published. He worked diligently on it during the closing years of his life when time would permit.

Robert Matthews then (in the same article) provides context for how finished the manuscript likely was at the time Joseph Smith was killed.

There has been an assumption that the JST was deliberately not published because it was grossly unfinished. That assumption is not based on all of the facts. The epistles of the First Presidency and of the Twelve as published in the History of the Church and the Times and Seasons, some of which are cited in this article, lead to the unmistakable conclusion that the intention was to publish. ...The basic conclusion seems to be that the work of translation was acceptable as far as the Lord required it of the Prophet at that time, but the manuscript was not fully prepared for the press.
Perhaps one reason for the feeling about the “unfinished” nature of the JST has been a statement by President George Q. Cannon in his Life of Joseph Smith the Prophet: “We have heard President Brigham Young state that the Prophet before his death had spoken to him about going through the translation of the scriptures again and perfecting it upon points of doctrine which the Lord had restrained him from giving in plainness and fulness at the time of which we write [2 February 1833].” (Salt Lake City: Deseret Book Co., 1958, p. 148.)
We note, however, that what is referred to is the nature of the translation as it existed in 1833. During the eleven years of his life after that time, the Prophet apparently did much of what he desired to do with the JST. The original manuscript tends to bear this out, since it shows an original draft and a later more complete revision, clarified in language and thought, and versed and punctuated. That the work was not perfected is clear. But it is equally clear that it was nearer the stage necessary for publication than casual observers have realized. We must also recognize that although the manuscript was ready for publication, this does not prevent more information from being added when the Lord desires to reveal it.