In May 2013, Cisco announced it will retire the CCIE Voice track and introduce the new CCIE Collaboration track, including new topics such as virtualization, Jabber instant messaging and video. After protest from current and aspirant CCIE Voice holders, whom argued that the differences remain too few to warrant retiring the track with no option to transition to the new track, Cisco offered a transition path for existing Voice holders. The Collaboration written exam may have availability starting from November 21, 2013. The lab exam will transition from Voice to Collaboration on February 14, 2014.