Sky announced this morning that the two services are coming to PS4 in the UK. Eurogamer has since confirmed Xbox One will also be getting Now TV while, when asked about Sky Go, the broadcaster replied it would "consider future opportunities".
The Xbox had originally been left out of the initial announcement which sees PS4 users eventually able to watch Now TV on their console in the Summer, and Sky Go later in the year if they subscribe to either service. (The former's already available on PS3.) Now Xbox One's getting at least a partial slice of the action.
PS4 gets Sky Go and Now TV from this summer - [Eurogamer]