I have been advised by the department as follows:
a) A specific feasibility study relating to the 10GB data has not been undertaken, however, the SA Connect Phase 2 proposal borrows on the tenets of universal access to basic and essential services (e.g. water, electricity and data being the next step). Recognizing the negative impact of the digital divide, especially in the rural and underserviced areas, the statement relating to the allocation of 10GB is a statement of intent to address this divide.
b) The proposed timeline is in parallel to the roll out of the SA Connect Revised Model, which is planned to be completed within the next 3 years starting from 01 April 2022.