As you can see from the SpoilerTV table linked above, this places Thrones among the most viewed programmes of the night, even when we take network TV into account, not just cable. On cable, it carried the night, beating NBA playoffs. The demo rating was 3.7.
We’ll update the post if more details are revealed, and we are of course always on the lookout for the current cumulative viewing numbers. HBO should reveal those in a couple of weeks when they grow impressive enough.