It's not new for the WSJ. They were one of the first major news orgs to impose a paywall, and it's one of the few success stories in the news industry.
I know and in a general sense I agree with their decision to do it - it makes sense. I just don't think it's appropriate for HN. If you do pay to bypass a news wall, chances are you will only pay for one. If there's three hypothetical equal competitors, that'll limit the audience by a third.
All I get is "To Read the Full Story, Subscribe or Sign In". That's it. No other options. Maybe I could get around it, but it's a lot more hassle for the average reader than it's worth.