It could just be a very, very
specific, unintentional typo, but we're gonna bet that ex-BioWare lead level designer Rafael Brown knew what he was doing when he included "Jade Empire 2 (360/PS3/PC)" in his list of "unreleased" games that he worked on in his LinkedIn profile
. The listing suggests a current-generation sequel was planned for the 2005 Xbox/PC/Mac Jade Empire
The listing also indicates he was working on the title at BioWare somewhere between April 2006 and April 2007 -- the year that Brown was employed by the company. His job description at the dev even specifies he was the "lead level/world designer on an unannounced project."
Meanwhile, other folks still employed at BioWare were feeling optimistic about the Jade Empire
IP as recently as 2009
. The BioWare of 2011, however, had yet to respond as of publishing.