The final version of the 2016 TWWHA management plan came out today:
The climbing section is on page 143.
The CCT was consulted on the drafting of this section, and we managed to negotiate some changes to the original text, in particular recognising the existing use of anchors at the major areas ("the occasional limited installation (or replacement) of permanent anchors at Mt Geryon, The Acropolis, Frenchmans Cap and Mt Anne is permitted.") and allowing their use in the post 2013 extensions (most notably Blackwood Summit). In the original draft there was a full proscription on power drills, in the final version they are allowed with written permission. These terms are probably more permissive than the 1999 management plan, which aimed to "Generally discourage the use of bolts and other fixtures that permanently damage rock faces."
So there was a lot of talk about fixed anchors in this process, but it's easy to lose sight of that 99% of climbs in the WHA are trad, and the management plan recognises climbing as a fully valid activity in the WHA - which is not necessarily a given.