Sigma will soon announce a new Macro lens for L-mount, this lens is Sigma 105mm f/2.8 DG DN Macro Art lens. The US price for this lens is $799. You can take a look at leaked images and specs of this lens:
The upcoming Sigma 100-400mm f/5-6.3 DG DN OS Contemporary Lens for L-mount will be officially announced tomorrow, the US price for this lens is $949, release date is on July 10th, 2020. Here are more leaked images of Sigma 100-400mm f/5-6.3 DG DN OS Contemporary Lens for L-mount.
According to Nokishita Camera, Panasonic will soon announce a new L-mount lens: Lumix S 20-60mm f/3.5-5.6 Lens. This lens will be a compact standard zoom lens for L-mount mirrorless cameras. The official announcement is expected in next few days.