ESO Stadia Pro Offer Ends July 16th, 2020

The Stadia Pro ESO free offer can be claimed on Pro until 6:59 am PT on July 16. Once claimed, it will be yours until you cancel your Pro subscription.

https://community.stadia.com/t5/Stadia-Community-Blog/This-Week-on-Stadia-The-Elder-Scrolls-Online-is-here-and-free/ba-p/24716