The cover is still sealed and appears to be empty.
That such a cover should appear at this time is just a coincidence.
It is undetermined if any covers will appear on the track-listing.
The 6-fold cover of M appears in the centralizer 2.3.
This cover also appears in the film's end credits and soundtrack.
The motor mount cover with its four recessed bolts appeared just before him.
A cover of "Part I" also appeared on the soundtrack album.
The covers have appeared on the market from time to time since then.
His cover also appeared as a hidden track on the first volume of that film's soundtrack album.
The cover also appears to have been designed for a slightly smaller book.