Don't Sky and BT still have the same number of games live as last time?
A bit more, 2 more for Sky and 10 more for BT. Although I think the second package of BT's is not 20 separate matches, there will be some simultaneous matches (like the Amazon package)
Personally I already I have Prime so as long the providers don't increase their costs then I'll be getting more for the same cost.
Even if you don't already have Prime then the cost won't have gone up, unless of course there is a price increase from Sky and/or BT.