I have two recordings of the Mazurkas, both that contain this "revised" version of the supposed final composition by Chopin. However, I haven't been able to find music for it. Does anybody have this music, and could they direct me towards it?

Did you try sheetmusicarchive.net?

Hi, I have seen almost all the reconstructions of this Mazurka (Ekier, Nowik, Smith, Magin, Spring, some excerpts from Kallberg's articles). The most popular are Ekier's (1965) and Smith's (1975), but Ekier doesn't use all the material of the third section, and Smith lacks a fundamental repetition sign (both make some mistakes in deciphering the autograph).

So I decided to realize a new complete reconstruction of the Chopin's sketch: a 18p. volume including an extensive commentary, the reconstruction, and also a semi-diplomatic transcription of the autograph (namely a printed version that roughly respects the original position of the bars, the aspect of several lines and signs, and the presence of textual notes).

This is the link: http://www.lulu.com/product/ebook/f-chopin-mazurka-in-f-minor-op-68-no-4-revised-version/18862166

Hope you enjoy it