The boys in Killswitch Engage may be subtly announcing the return of original vocalist, Jesse Leach. Earlier today, the band posted a picture on their website of themselves standing in a snow field with Leach as the focal point. According to other sources, the return of Leach has been "confirmed" but nothing has been officially announced from any band members.
*UPDATE: At the time of this post it was only speculation as to whether Jesse had joined the band. Listeners and other news sources have confirmed that Leach has rejoined the band.