Wu Zetian
TinSoldier mentioned that she should be released in 6.2, but some how Nexon changed their mind.
Wu is the only woman empress in Chinese history. She is a good leader, but not a great leader. So her offer will relate to what Nexon's view about China.
China is known as a country with huge population, Likely she will offer some worker, and increase troop space.
And her delay is very likely because Nexon don't want to be that generous offering time discount.