Fans think he may have accidentally made the songs public
It comes after much speculation that Metallica might also be playing a run of dates at the state-of-the-art venue
The band's residency at the Las Vegas Sphere ends at the end of March
Released 50 years ago, the record is also the fifth best-selling album globally
It will be the second in the US, and significantly smaller than the 20,000 capacity design in Las Vegas
They also covered Bill Fay's 'Pictures Of Adolf Again' and the early War On Drugs track 'Arms Like Boulders'
A New York judge said the dismissal of criminal charges against a rare book dealer did not stem from "any bad faith conduct" by the musician
The four newly added dates bring their total number of gigs at the venue to 48
The musician is recovering after he was abruptly rushed offstage during a Rock Legends Cruise performance on Thursday (February 13)
He has been a part of the line-up since 2001