Surprising news coming out of the Testament camp. The legendary thrash band has parted ways with longtime bassist Greg Christian. However, in true Testament fashion, when one member goes, a musician of the highest caliber comes in to fill the spot. Iconic Death / Sadus bassist Steve DiGiorgio, who had a previous stint in Testament, has been tapped as the band's new bassist.

Greg Christian is an original member of Testament, and has performed on what many believe to be the most essential Testament records. However, DiGiorgio did play on acclaimed albums 'The Gathering' and the 'First Strike Still Deadly' during his previous stint in the band.

Testament posted on their official website:

It is with much respect that we announce our mutual parting with bassist Greg Christian. Metal fretless bass pioneer Steve Di Giorgio will be returning to TESTAMENT. Steve previously was a member of TESTAMENT on The Gathering (1999) as well as First Strike Still Deadly (2001). He will be joining TESTAMENT on their upcoming shows in Australia on the Soundwave Festival, Japan and Mexico City. Steve will also be taking part in the new TESTAMENT album.  We are looking forward to continuing the momentum you, the fans, have made possible.

Testament will begin their 2014 touring cycle on Feb. 22 in Brisbane, Australia.