'Are current Sky HD Pack only customers with Sky Sports F1 set for a shock?'
http://f1broadcasting.wordpress.com/2013/06/01/are-current-sky-hd-pack-only-customers-with-sky-sports-f1-set-for-a-shock/
This has been rumoured for a while, no doubt they just included as part of the HD pack to try and silence some people when they first took it over.
I expect a lot more changes as they merge into just another sport on Sky sports - F1 channel will go, ads will start during the race, most F1 programming will stop apart from race weekends.
F1 viewing figures will go to hell in the UK over the next few years