Along with FE 17-28mm f/2.8 and FE 28-75mm f/2.8, Tamron will officially announce four more FE lenses in October. The upcoming telephoto zoom lens is Tamron 70-180mm f/2.8 Di III RXD lens, and three prime FE lenses are all f/2.8 prime lenses. These prime lenses are very compact, as you can see the size from the teaser images.
Tamron has just posted another teaser for upcoming 4 new FE lenses. Tamron said these four new lenses will be officially announced in October next month.
Tamron has already released two FE zoom lenses, now the third zoom lens is confirmed, it will be Tamron 70-180mm f/2.8 Di III RXD FE lens. This lens will be a super compact telephoto zoom lens compared to FE 70-200mm f/2.8 GM lens.