Fleetwood Mac's spokeswoman Liz Rosenberg confirmed keyboardist and singer Christine McVie has rejoined the British-American band after a 15-year absence. "Christine McVie has rejoined Fleetwood Mac and there may be an announcement about a potential tour for all the Macsters down the road," Rosenberg told CNN Tuesday. McVie, 70, joined the group in 1970 and retired in 1998, the same year the band was inducted into the Rock and Roll Hall of Fame. She has, however, occasionally performed with her former band-mates since.