Organizers of the M3 Rock Festival announced on Wednesday that Cinderella has pulled out of the event, scheduled for May 11th through the 13th, because guitarist Jeff LeBar is receiving medical attention for an undisclosed medical condition, forcing the band to cancel all of its scheduled tour dates through the middle of June.  Taking Cinderella's place are fellow 80s hair metal favorites L.A. Guns and Great White.  The M3 Rock Festival is being held at the Merriweather Post Pavillion in Columbia, Maryland.  Check out a full list of participating acts and a flyer for the festival below.

2012 M3 Rock Festval Lineup

Friday, May 11:

Night Ranger
Kix
Enuff Z'Nuff
In the Pink
Let There Be Rock

Saturday, May 12:

Queensryche
L.A. Guns
Great White
RATT
Skid Row
Warrant
Quiet Riot
Dokken
Stryper
Loudness
Lynch Mob
XYZ
Bang Tango
Drum Wars
Street Light Wars