http://avatar.wikia.com/wiki/Turf_Wars_Part_Three
Some promising words about Asami being kidnapped in Turf Wars Part Three Coming June of Next year.
When Asami is kidnapped, Korra sets out to the Spirit Wilds to find her. Now teeming with dark spirits influenced by the half spirit-half human Tokuga, the landscape is more dangerous than ever before. The two women must trust in each other and work together if they are to make it out alive. Their fate is revealed in this stunning, action-packed conclusion to The Legend of Korra: Turf Wars!
Korra Turf Wars Part Three (Preview Text)
Moderator: Suicide