In 2008, it was revealed that Fzoul was killed by Netherese, and Orbakh (the vampiric Clone of Manshoon), rose and took over the Black Network of the Zhentarim. Then he retook the name of Manshoon.
Right now, as in at this very moment, according to Wizards of the Coast? Or as in "Whatever game timeframe we set Neverwinter?" Because, at this very moment, it's Manshoon-formerly Orbakh. Fzoul killed Manshoon-prime, but Fzoul is now dead-risen by Bane as an exarch, and the vampiric clone of Manshoon that became known as…