Last year renderings are not accurate.
Specific numbers: Quebecor will pay $65M for naming rights, $5M/year to use the amphitheater and about $40M to built diffusion and broadcasting technology infrastructure. Purchasing rights to the 86 corporate boxes have already been sold and about 4100 individual purchasing rights have been sold as well and it has been very busy since yesterday. The purchasing rights basically give you access to a presell for your seat for every show, match or event taking place in the new amphitheater. 8000 such rights are available out of the 18000 seats. These purchasing rights will inject an additional $35M of private money. There are also talks that more important donations may be announced. Anyway, thats a minimum of $140M in private money plus $5M/year out of an estimated construction cost of $326,5M plus $73,5M put aside for risks and contingencies. Hence,
for now private investment represents a minimum of 35% of the total cost, excluding yearly payments. The rest of the cost will be assumed half by the city and half by the Provincial government.