I lost my CD copy of In Utero years ago so this was a much-awaited buy for me.
It had a bunch of bonus tracks including some In Utero-era rarities like Marigold, Gallons of Rubbing Alcohol, Sappy, the Beavis & Butt-head studio version of I Hate Myself and Want To Die (released for the first time without B&B's intro) and a different version of "Moist Vagina" where Kurt changes the chorus to "Marijuana!!" Plus Steve Albini's original mix for Heart-Shaped Box and All Apologies.
It also had a handful of demos which weren't particularly impressive and two new studio tracks "Jam," and "Forgotten Tune." Neither of them were especially good. Plus it came with the complete Live And Loud performance, if you bought the complete copy.