Earlier this year, NASA selected two missions to Venus as finalists for the next Discovery-class mission, DAVINCI+ and VERITAS: https://www.nasa.gov/press-relea

Earlier this year, NASA selected two missions to Venus as finalists for the next Discovery-class mission, DAVINCI+ and VERITAS: https://www.nasa.gov/press-release/nasa-selects-four-possible-missions-to-study-the-secrets-of-the-solar-system https://www.nasa.gov/press-release/nasa-selects-four-possibl... It's unclear if these missions are currently designed to be able to detect phosphine though.