The Tamron 20-40mm f/2.8 Di III VXD brochure leaked, which you can view above or here. Below are some of the details from the brochure.
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Tamron 17-28mm f/2.8 Di III RXD FE:
B&H Photo / Amazon / Adorama
Tamron 28-75mm f/2.8 Di III VXD G2 FE:
B&H Photo / Amazon / Adorama
Tamron 28-75mm f/2.8 Di III RXD FE:
Amazon
Tamron 35-150mm f/2-2.8 Di III VXD:
B&H Photo / Amazon / Adorama
Tamron 70-180mm f/2.8 Di III RXD FE:
B&H Photo / Amazon / Adorama
Tamron 28-200mm f/2.8-5.6 Di III RXD FE:
B&H Photo / Amazon / Adorama
Tamron 20mm F/2.8 Di III OSD M1:2(Model F050):
B&H Photo / Amazon / Adorama
Tamron 24mm F/2.8 Di III OSD M1:2(Model F051):
B&H Photo / Amazon / Adorama
Tamron 35mm F/2.8 Di III OSD M1:2(Model F053):
B&H Photo / Amazon / Adorama
via digicame-info