Prior to annexation of an unincorporated area, a city council shall request and receive a recommendation from the planning and zoning commission, or the planning commission and the zoning commission, on the proposed plan and zoning ordinance changes for the unincorporated area. Each commission and the city council shall follow the notice and hearing procedures provided in section 67-6509, Idaho Code. Concurrently or immediately following the adoption of an ordinance of annexation, the city council shall amend the plan and zoning ordinance.