|Online record store cduniverse.com now lists two upcoming GN'R titles on their web site:
Greatest Hits Vol. 2
Label: Geffen Records (USA)
Orig Year: 2006
CDU Part#: 7005022
Street Date: Dec 13, 2005
Welcome To The Jungle: The Very Best Of Guns N' Roses
Label: Geffen Records
Orig Year: 2005
CDU Part#: 7005023
Street Date: Dec 20, 2005
They list two versions of each. Possibly one explicit and one clean version.
You can see the cduniverse.com GN'R listings here.
There still hasn't been any official word on these releases.