Tenet screenplay can (finally ?) be bought in France, on August 27^(th) : Link.
I'm quite optimistic now ;)
If you prefer a physical copy, you can pick it up from Amazon.
does anyone know what's the difference between these two versions?
Here's a link I've had for a while.
You can purchase Tenet's screenplay book from Amazon:
https://www.amazon.com/Merry-Go-Round-Christopher-Nolan/dp/0571362737
It's on Amazon! Going out on September 22, but some people are saying they're receiving their copies next week.
UK Amazon:
https://www.amazon.co.uk/dp/0571362737/ref=cm_sw_r_cp_api_i_CN4sFbXJ2C4ZD
Have pre-ordered. Curious to see what arrives and when.