The Xiaomi Mi 8 still isnt available on the French branch of Mi.com, but they did show up at some retailers. The postings that seem legitimate are at the pre-order stage with a vague coming soon for the launch date.
The model with 64GB storage is priced at 500 at both Amazon and Topachat. The latter also offers the 128GB model at 560. Only Blue and Black color options are available.
Xiaomi Mi 8
A Super Moderator at the Mi forums was claiming that the Xiaomi Mi 8 is available in France, Russia and other countries way back in mid-June, but this is the first evidence weve seen (and they are not quite available).
Via (in French)