Sigma issued a new firmware update for six E-mount lenses (download here):
Updates for the 24mm F3.5 DG DN and 90mm F2.8 DG DN:
・Supported the AF assist function during movie shooting.
・We have optimized the focus distance displayed on the screen during manual focus.
Updates for the 35mm F1.2 DG DN, 45mm F2.8 DG DN and 105mm F2.8 DG DN MACRO
・Supported the AF assist function during movie shooting.
Updates for the 100-400mm F5-6.3 DG DN OS
・Supported the AF assist function during movie shooting.
via Asobinet