I saw My5 during the keynote but missed ITV. That's a step in the right direction, just need to get Channel4 and UKTV Play onboard now.
This was the last response from Channel 4 regarding Apple TV:
https://twitter.com/RDH_tweets/status/907710888295194624
TV Player already has an app on the Apple TV unless you're needing a specific channel to UKTV Play.