and it'll be the ICC S&V coverage as per Sky Sports on Channel Four.
from the Sky press release:
Viewers will be able to enjoy Sky Sports' coverage from 9am as England try to lift the Cricket World Cup for the first time. Coverage will move to More4 from 1.15pm when the F1 British Grand Prix takes place, reverting to Channel 4 after the race has finished.
sounds like it'll be Sky's presentation, rather than the pure world feed.
While it's not unusual to see a fully presented programme from a foreign broadcaster turn up on a sport channel (eg AFL or A-League on BT Sport), I'm not sure I remember a live event turning up on another UK broadcaster's channel, complete with their branding before.
UKnews and Jon gave kudos