Tamron 70-300mm f/4.5-6.3 Di III RXD (Model A047) telephoto zoom lens for Sony E-mount now officially announced. According to Tamron this is the ‘smallest and lightest’ telephoto zoom for Sony full-frame mirrorless cameras.

Developed with the concept of bringing the joy of easy telephoto shooting to photographers everywhere, it’s the world’s smallest and lightest 70-300mm zoom lens at 5.8 in., 19.2 oz. and maximum diameter of 77mm, and delivers exceptional image quality.
…
Continue here:
https://www.dailycameranews.com/2020/09/tamron-70-300mm-f-4-5-6-3-di-iii-rxd-lens-for-sony-e-mount-model-a047/