I ended up buying a new AirPort Extreme after the last firmware update bricked my Express, but these look nice.
Meshed networking would never work in my case (I need to have Gigabit “backhaul” to link my base stations, since they have multiple armored concrete walls between them), but I hope these don’t require cloud-based functionality – I find it depressingly stupid (and incredibly risky) to have LAN equipment managed by (likely insecure) cloud services, and Cisco has been pushing out several variations on the managed AP theme for years.
I’ll be tracking in-depth reviews of the Velop range with interest.