New Tamron patents disclose the design of a 15-30mm f/2.8 and 200-800mm f/5.6 lens
https://www.sonyalpharumors.com/new-tamron-patents-disclose-the-design-of-a-15-30mm-f-2-8-and-200-800mm-f-5-6-lens/
Tamron patented the design of two new lenses that might be available for Sony E-mount:

キヤノンの特許は良い特許

タムロンの特許は悪い特許