We don't have the internet infrastructure for this and I'm not sure when we will if I'm honest. Anybody in a rural location or place where there isn't capacity are not going to get it.
1280 x 720 — 720p, recommended bitrate = 5 Mbps
1920 x 1080 — 1080p, recommended bitrate = 8 Mbps
3840 x 2160 — 4K, recommended bitrate = 25 Mbps
and that's just a single channel, when you add in extra boxes or programs being recorded that goes right up. Furthermore that's also if nobody else in the house is using the internet for consoles and the like.
Guestimate minimum connection speed would be 30mbps.