It's a remake, after RE2 she dumps Sherry onto Leon and goes straight to keep looking for his brother, CVX happens a few months after RE2 as well, so there is nothing from Claire happening in between that timeline
Trailer looked great and nothing like CVX, I like how they're adding a prologue to the story, because in the original she goes to the Umbrella Building in France shooting bullets like crazy and then get overwhelmed and captured, here you see her arriving to France looking for Chris normally, cool they'are adding more to the story and I guess Hunk is in fully and not just name dropped in some note unless it's not the real one but someone from his team
The forest shown is what I cannot see a connection with the original game, overall it's great they're finally remaking CVX after so many years