According to Tamron Japan, the Tamron 70-180mm F/2.8 Di III VXD (Model A056) lens will be on-display at the CP+ 2020 event. The new high-speed telephoto zoom lens for Sony E-mount full-frame mirrorless cameras will be released in the Spring of 2020.

Tamron Japan has officially announced that they will attend the upcoming CP+ 2020 in Japan during February 27th to March 1st. At the CP+ event you will be able to touch and try this lens. Tamron may announce the price and release date of this lens at this show.
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https://www.dailycameranews.com/2020/02/tamron-70-180mm-f-2-8-di-iii-vxd-lens-to-be-announced-at-cp-2020/