Every row says what makes it confirmed, or why it is not yet.
Around eighty hours for the main story and the narrative side content.
Reported by multiple outlets from the hands-on previews, along with a chapter structure in the shape of Red Dead 2's. Rockstar has not published a figure.
Some of the scenery gives way. How much of it is an open question.
A man is thrown through a wall during the drug-lab raid in the Extended Look. That is one wall in one scripted moment — enough to report, not enough to call it a system.
GTA V had one. Previews say VI will not, at least not on day one.
Reported from the hands-on sessions. Rockstar has not addressed it directly, and nothing rules out its arriving later.
Carrying a realistic number of guns rather than an armoury in your back pocket.
Reported from Red Dead 2's approach and from what is visible on characters in the footage. The Extended Look's revamped wheel is an item wheel — masks, headwear, eyewear, outfits and two consumable slots — so it shows how equipment is organised, not a cap on guns.