Communications Minister Stephen Conroy believes the release of the NBN implementation study would "provide an opportunity for more informed discussion", but declined the opportunity to release it today.
Appearing at the opening of the CommsDay Summit in Sydney, Conroy told delegates that the study was a "detailed and comprehensive document" spanning over 500 pages and making 84 recommendations.
"It is a significant and important document for the future of this sector," he said.
"As much as I would like to... unfortunately I will not be releasing the report today."
He reiterated guidance that he would release the study publicly sometime by the Federal Budget on May 11.
Conroy believed its release would water down the impact of Opposition criticism over the NBN
"I know that many people in this room genuinely want the discourse and debate on the NBN elevated to more substantive issues," Conroy said.
"I share this view and the release of the implementation study will provide an opportunity for more informed discussion."
The $25 million NBN implementation study, prepared by KPMG and McKinsey, was handed over to the Government in early March.
It has since been under wraps to all but the Government and NBN Co, despite a failed attempt by the Senate to have the document revealed publicly.