The exclusive director's cut of the video for Nirvana's Heart-Shaped Box has been released online ahead of the deluxe reissue of In Utero, which celebrates the 20th anniversary of the 90s grunge Gods' final album.

This version of the video made it's online debut on Aug. 20 and the deluxe reissue is set for release on Sept. 24.

The massive anniversary edition will be a treasure trove of rare delights for fans. The deluxe edition will include three CDs featuring a new mix of the album, a never-before-heard instrumental, Dave Grohl's first demo 'Marigold,' new liner notes by Bobcat Goldthwait, and Kurt Cobain's handwritten lyrics.

Fans will also be treated to the raw versions of Heart-Shaped Box and All Apologies produced by Steve Albini, versions that weren't touched up by Scott Litt (producer of R.E.M), who mixed the LP.

The three-disc set will include 70 songs, two versions of In Utero (the original LP remastered and the newly mixed album) and 40 tracks of unreleased demos, rehearsals, live performances, and B-Sides.

The box-set will be accompanied by a DVD which features the band's legendary Live and Loud performance in Seattle, as part of the In Utero tour in 1993. This was also one of the band's final concerts. The director's cut for Heart-Shaped Box -- which will also be part of the anniversary special -- was featured on Anton Corbijn's Director's Series DVD, and was only recently made available online. Corbijn (Control), who directed the video, has also worked with bands like U2, Depeche Mode, and Metallica in the past.

In the director's cut, the first half of the song mostly sticks to the original, it's only somewhere around the third verse that we start noticing changes between the two versions. Both versions retain the elemental creepiness. The edits don't seem to have been made for want of appeasing the more conservative viewer.

The special anniversary issue can be be pre-ordered on iTunes.

Watch the director's cut of Heart-Shaped Box here: