Ann: Proposed Sale of Western Tanami Project, page-16

From August 4th 2017:

Northern Star has set an exploration budget for this financial year of $35 million.

The budget includes an initial $8 million spend at the Central Tanami project focusing on existing deposits and regional exploration.

Development studies into a 100,000ozpa operation will also restart towards this end of 2017.3

http://www.resourcesrisingstars.com.au/news-article/northern-star-maps-out-long-lives

I'd be expecting we'll hear more around whats been happening in relation to the existing deposits & regional exploration which seems linked to the development studies of the 100,000ozpa operation at CTP..