Any list which involves UK government spending
The way it was reported on the radio this morning is that the change from 60 to 100 billion was due to countries like Poland and France saying that the UK would be required to pay for future agricultural subsidies.
Only time will tell whether this is indeed a speculative "moon shot" list, whether it's an initial high bid or whether this is an ongoing process where the number increases inexorably as different facets of the UK's commitments to future EU budgets are considered and evaluated.
Popping a tinfoil hat on, I'd suggest that the 100 billion figure allows the UK to settle at 60 billion and claim that they successfully engaged in some negotiations.