He said the scope of the project had not changed in any way during contract negotiations.
"In terms of timing, the project is on track and we expect structural work on the building to start mid-October," he said.
"Relocation of library services to temporary premises in the inner city is giving us the opportunity to experiment with new, modern services we could introduce in our future library.
"We have the chance to trial these now and implement what works when we move back to Haupapa St."
Mr Foster said library staff were trialling self-issue machines in the temporary library and were about to introduce e-magazines.
"In an effort to reach a wider section of the community, particularly adults, library staff are also developing new programmes including an environmental/sustainable living lecture series, a support group for grandparents who are raising grandchildren, business-related seminars on topics like entrepreneurship and small business development and community law and Justice of the Peace services."
He said staff were also working with the museum to provide access to community archives and were exploring a range of technology options such as mobile technologies, touch screen computers, tablets and other devices for use in the library to provide more digital learning opportunities.