http://www.rpgfrance.com/dossier-10388-1-preview-the-witcher-iii-traque-sauvage
This actually has some very interesting information.
Im using google translate so I might be talking bs, but it says that to the journalists the graphics were downgraded or simply dont look that good as the old version (playing high in PC i assume since M/K wasnt there to try, unlike in Gamestar's)
But the best part so far is, there are up to 7 ingredients we can combine to use potions, and some potions still have to be drank before combat, during meditation, in order to activate their effects later, so thats still in apparently
No animations for consumables.
To one of the journalists, TW1 and TW2 were badly written, not mature at all, and lacked subtlety, however TW3 has improved greatly in this department and he got surprised.
Secondary and tertiary characters have some surprisingly bad facial animations.
Monster hunting felt repetitive, especially with Witcher Senses, and it was already getting tiresome/not good in just 3 hours and half of gameplay.
NPCs were less reactive than what the guy expected, he said he was stealing and threatening people with the swords and they didnt do anything, it was disappointing.
Other than that pretty much everything was positive and similar to what other sites say in general.