Fleetwood Mac appears ready to rock -- or something like that -- in 2013. Stevie Nicks tells ABC News that the group, which last toured in 2003, will "go into rehearsals somewhere around the end of February...If everything goes to plan, we should probably be out by end of April (or) May, I would think." The group is also considering some new music, she added -- "actually, maybe like two songs, maybe four, who knows? We don't really know yet 'cause we're not in the world of Fleetwood Mac yet." The group is also being rumored for next summer's prestigious Glastonbury Festival in England. Nicks is currently promoting "In Your Dreams," a documentary about the making of her latest solo album of the same name.