With narration, things sound and look too "games journalism" and marketing-y. I'd rather have something like that that is much more data and news focused. Having patch notes in it was pretty cool: when buying a game especially niche/early access ones, I have look into what the game is a about (store description) a good look into latest news and patch notes, and a quick glance on reviews and other info.
Having all that compacted into a quick video would be cool indeed.

Thanks!