From Blabbermouth:

MARILYN MANSON guitarist John 5 (a.k.a. John Lowery) has reportedly
collaborated with songwriter James Michael (who co-wrote SALIVA's "Rest In
Pieces" with MÖTLEY CRÜE's Nikki Sixx) on a new GARBAGE song, to be included
on the group's next studio album. "[GARBAGE drummer/producer] Butch Vig is
such an amazing producer, and I was honored to be able to work on a track
that he's producing," Michael wrote on his official web site. "Sounds like
the record is going to be cool." No further information is available at this
time.