CGST rate amendment adds a new nominal slab and mandates pre-packaged and labelled classification for specified goods. Amendment to notification No.1/2017 inserts a new Schedule imposing a new CGST rate on specified tariff headings, implements wide-ranging substitutions, insertions and omissions across Schedules I-VI to revise descriptions and classifications of goods, and mandates the qualifier 'pre-packaged and labelled' for numerous entries; the Explanation defines that qualifier by reference to the Legal Metrology Act, 2009, with the amendments effective from the stated July commencement date.