Dear colleagues, Geordie Williamson has been invited to give a plenary talk at the ICM in 2018 in Rio de Janeiro. The ICM will take place 1-9 August 2018 at the Riocentro Convention Centre. See http://www.icm2018.org/portal/en/icm-speakers for the full list of the 22 plenary speakers. Geordie will also be leading a special year in Representation Theory at the Institute of Advanced Studies during 2020-2021. Congratulations Geordie!