Herwig 7.2 release note. - Bellm, Johannes; Bewick, Gavin; Ferrario Ravasio, Silvia; Gieseke, Stefan; Grellscheid, David; Kirchgaeßer, Patrick; Loshaj, Frashër; Masouminia, Mohammad R.; Nail, Graeme; Papaefstathiou, Andreas; Plätzer, Simon; Podskubka, Radek; et al. (European Physical Journal C -- Particles & Fields, 2020)