Nokishita spotted two USB Docks registered by Sigma the UD-11SE and UD-11L. These are probably to be able to access advanced features for E-Mount and L-Mount lenses.
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SIGMA 24-70mm F2.8 DG DN Art: B&H Photo / Amazon / Adorama
SIGMA 45mm F2.8 DG DN: B&H Photo / Amazon / Adorama
via Nokishita