C Ramachandraiah of Centre for Economic and Social Studies, Hyderabad has a piece on this topic.
He says much of the vision of the new capital city is based on speculation and disconnection from reality:
Amaravati, the planned new capital of Andhra Pradesh, is to be set up in a highly fertile, multi-cropped area in the Guntur-Krishna belt where the water table is just 15 to 20 feet below the surface. The Government of Andhra Pradesh has been aggressively pursuing land pooling through a series of not-too-friendly measures to acquire land for the capital which will be located in a low- to medium-risk flood area. Where the Singapore consultancy’s master plan for the new city, Amaravati, falters is in not visualising the need to accommodate low-income residents and the informal sector in the new capital, and in its exaggerated projections of employment generation in the information technology sector.
Of all the projections, one can be sure that actual population could be much higher than projected. And availability of public services much lower..