We already saw the first leaked images of the new 105mm f/2. macro L-mount lens. But Sigma is promising the announcement of multiple new lenses:
We are pleased to announce the holding of an online event “SIGMA STAGE Online”, which is a presentation of new DN series (dedicated to mirrorless interchangeable-lens cameras) interchangeable lenses. It will be held on 30th, September, 2020, from JST 21:00 / CEST 14:00 / EDT 08:00.