OK, after having perused the new French-language edition of Tunnels & Trolls, I must agree that calling it "8th edition" is somewhat of an exaggeration. What Patrice Geille has done beyond translating the rules is mostly re-organising them in a more logical, structured way (7th ed was such a mess!).
Combat is the part that has received the most in-depth treatment, and indeed I can see a rule that I don't remember having seen in other editions (but then I'm not a big T&T expert): any damage inflicted through spells and/or missile weapons at the beginning of an encounter is added to the rolled damage total of the first round of combat, which is actually tantamount of keeping track of said damage twice. Now the rules say this is to reflect the 'shock' value of that damage; however, I don't think I'll apply that rule.
There is also quite an extensive part dedicated to poisons and their various effects, which I don't recall having already noticed in previous incarnations of the rules (possibly as an extra in the 30th anniversary CD).
More in future posts as I continue reading the rules and writing down small notes.