According to an article on AllAfrica, the National Bank of Angola introduced a new polymer 500-kwanza note (B558a) on 17 September 2020. This joins the new 200-kwanza note (B557a) introduced on 30 July 2020, and will be followed by a new 1,000-kwanza note (B559a) in October and 2,000-kwanza note (B560a)
This 1,000-vatu note (overprinted on B210) commemorates the 40th anniversary of independence. Unlike with preceding issues wherein the first two digits of the serial number represent the last two digits of the year of printing, the 40 on these notes represents the 40th anniversary. Courtesy of Pratham Vyas and Claudio
According to a press release dated 7 July 2020, the Banco Nacional de Angola is intoducing a new family of notes to commemorate the 45th anniversary of independence, declared on 11 November 1975 by Agostinho Neto, the first president of Angola, whose portrait appears on the front of the notes.