According to a posting on DEF LEPPARD's official web site, the release date of DEF LEPPARD's all-covers set, entitled "Yeah!" has been pushed back to late 2005/early 2006 from the previously announced September 20. No reason was given for the delay. Guitarist Phil Collen recently told Billboard.com that the song list for the set had yet to be finalized, as the group decided to record more cuts than it originally planned. He confirmed that the album will include "a bunch of stuff — all '70s stuff. Most of it is songs that we grew up with in England. 'No Matter What' by BADFINGER is going to be the leadoff single. We've done 'Waterloo Sunset' by THE KINKS, T. REX, MOTT THE HOOPLE, ROXY MUSIC and THIN LIZZY. And a lot of it is obscure; it's not the standard stuff. It's not like STONES or BEATLES songs."

In other news, DEF LEPPARD's official web site has been updated with a preview of the artwork for LEPPARD guitarist Vivian Campbell's first solo album, "Two Sides of If", which is due on September 6. According to Launch Radio Networks, Campbell will be joined on the blues-oriented album by ZZ TOP's Billy Gibbons, singer Joan Osbourne, and former FRANK ZAPPA and MISSING PERSONS drummer Terry Bozzio. "Two Sides of If" features a collection of Campbell's favorite blues songs, including WILLIE DIXON's "I Ain't Superstitious" and "Spoonful", FLEETWOOD MAC's "Like It This Way" and "Willin' For Satisfaction", RORY GALLAGHER's "Calling Card", and MEL LONDON's "Messin' With The Kid".

Gibbons guests on the two FLEETWOOD MAC tracks, while Osbourne performs on "Spoonful". Bozzio plays drums on the entire album.

DEF LEPPARD's "Rock of Ages", a new two-CD collection of hits, was certified gold on June 22 by the RIAA (Recording Industry Association of America) for shipments in excess of 500,000 copies.