Some quick facts for ya
Matt Sorum first live gig was in 1991 so he wasnt the drummer in the Stones shows back in 1989, Adler was.
Chinese Democracy has NOT leaked yet, only 4 demos have and are TWAT, Catcher in the Rye, Better and I.R.S. Dont believe any rumor that says otherwise or any fake CD on emule or soulseek, they are mostly old demos back from the original lineup mostly. Brian May plays lead in CITR song.
Other new songs only exist in live format played in 2001 and 2002. They are Madagascar, The Blues, Chinese Democracy, Rhiad and the Bedouins and Silk Worms.
Only studio song released from the new line up is Oh My God found on the End of Days Soundtrack.
GNR will headline Rock in Lisbon, Download Festival and many other european festivals this summer, a USA tour and the eventual release of the new cd are rumor to happen aswell but NOT confirmed.
Hope ths helps.