The article said smaller but taller, so I’m thinking Airport-shaped with still plenty of room for ports.
Article said one HDMI, at least 3 USB-C + power. Doesn’t mention Ethernet at all. Does the Apple TV have Ethernet? That looks like the form factor they’re starting from.
Last I checked they had two tiers of TV. Base model was WiFi only, and the slightly more expensive one had more storage and an Ethernet port.