This release is the R-Rated "US Theatrical Version" which apparently contains some "optical censoring" to a close up of a shotgun blast to the head towards the end of the movie. David Lynch supervised this censorship, but that does not necessarily mean he approves of it.
Uncut versions are available in Japan and Korea. However, those transfers are not this remastered audio and picture supervised by David Lynch. An uncut version of the remastered version is not currently available on DVD.