[newsjunkie]

Wonder why Sky effectively dropped out of producing it? Didn't they make a big deal of getting included in that rota? And now they're not in it.

I know their Australian Sky News channel managed to pee everybody off by breaking the embargo last year for this, but that shouldn't have affected the production of it, which was done by the BBC anyway.

I'm not sure they have. It will probably be Sky for the next two years.
The BBC last year was an unexpected change with the promise that ITN would take this year instead.