Sadly the IWA show has been officially postponed to an unknown date. This is due to the Coronavirus outbreak and the obvious issues around the spread through Europe and public events.
More can be read on the FieldSportsChannel https://www.fieldsportschannel.tv/iwa-postponed-official/ pages.
NürnbergMesse has decided to postpone IWA OutdoorClassics 2020 from the planned date of 6-9 March 2020 to a date in 2020, which has yet to be specified