The upcoming Tamron 28-200mm f/2.8-5.6 Di III RXD Lens for Sony E-mount will be officially announced on June 11th 2020 with a launch price of $729 USD.
This new Tamron 28-200mm f/2.8-5.6 Di III RXD Lens will be a great alternative to the Sony FE 24-240mm f/3.5-6.3 OSS all-in-one zoom lens, and it seems that this lens will have the same size of the current Tamron 28-75mm E-mount lens ($879).
Reminder: Sony USA has released the new instant rebates on selected Sony mirrorless cameras for June 2020. And you can save up to $300 on Sony a7R IV, a7R III, a7 III, a6600, a6400. For the first time, the Sony a7R IV camera body has got $300 off.