http://en.wikipedia.org/wiki/Anthrax_(band) On September 3, 2009, it was announced that John Bush would be yet again singing with Anthrax at the Loud Park '09 Festival in Japan on October 17.[14] Anthrax with John Bush are also scheduled to take part in the February 2010, 5-show touring Soundwave 2010 festival in Australia. While details still aren't clear as to whether or not Bush's membership in the band is permanent, Benante has said that the band is "in the process of regrouping with [Bush]. We played two shows with him, and we are looking forward to proceeding with this lineup."[15] Anthrax has also confirmed a "big 4 tour" (with Metallica, Megadeth, and Slayer) as part of the 2010 Sonisphere festival. This will be the first time that all four bands have played together. [16] http://anthrax.com/NFWS/ The bands website has no lead singer listed as the last singer is no longer with them. Got to believe that Rob being close to John had a lot to do with this. I hope this is permenant, because it would be awesome!
