Led Zeppelin have announced the 2nd phase of their reissue campaign: deluxe reissues of the ‘Led Zeppelin IV’ (aka ‘Zoso’ or simply untitled) and ‘Houses of the Holy’ will be released on Oct. 28th.

For bonus material Page tells Radio.com, "I left no stone unturned. I was even checking out whatever had come out on bootleg that had leaked out of studios in the past - not by us, I might add. But I wanted to make sure that the material that I was going to present was not out already on bootleg."

The deluxe edition of ‘IV’ will include unreleased versions of every song heard on the original album including alternate mixes of ‘Misty Mountain Hop’ and ‘Four Sticks,’ mixes of ‘The Battle Of Evermore’ and ‘Going To California’ with extra guitar and mandolin, and an alternate version of ‘Stairway To Heaven.’

The Houses of the Holy reissue will include "rough and working mixes" of ‘The Ocean’ and ‘Dancing Days,’ as well as a version of ‘The Rain Song’ without the song's distinct piano.

Each reissue will be available in several formats: as a single CD (with no bonus tracks), a deluxe double CD (containing all the bonus tracks), a single LP, a double LP, a digital download and a "super deluxe boxed set" including all of the above material on both CD and LP, with a hi-def audio download card, as well as a hard bound 80-page book with rare and previously unseen photos and memorabilia.