Ah, more recent news (October 2010) and it confirms that there is a plan, to build and to oppose the dam.
Meridian has the project on first base by obtaining the required resource consents from the West Coast Regional and Buller District councils. In March, commissioners decided, two to one, to grant the consents. The Department of Conservation (DOC), Forest & Bird and Whitewater NZ are appealing and the Environment Court is expected to hear the case in 2012.