Not in Canada and it does not include Game of Thrones or other recent shows I'd pay to watch.
To clarify, you can already pay to watch past seasons of Game of Thrones on Amazon Video on Demand in the US. It's just not included for free with Prime which as I understand is the change that's happening for a subset of HBO content.
not in the uk it seems.
I love region limited distribution so much.
sigh.
Went to check this — seems that you can watch some HBO shows on instant video, but you have to pay extra for those. Kind of sucks.