Tamron manager Jared Powers above says that there are 6 lenses in development in addition to the 4 that Tamron just announced. There is no confirmation that all 6 will be coming to E-Mount, but most probably will especially if they are all mirrorless.
Also, the 70-180mm f/2.8 will ship during the first half of 2020.
20mm F/2.8 Di III OSD M1:2（Model F050):
B&H Photo / Amazon / Adorama
24mm F/2.8 Di III OSD M1:2（Model F051):
B&H Photo / Amazon / Adorama
35mm F/2.8 Di III OSD M1:2（Model F053):
B&H Photo / Amazon / Adorama