I find their wording interesting. Microsoft advertises their Xbox Live Gold subscription as "as low as $5 a month"; whereas Sony announced their as "less than $5 a month".
What's interesting is that it took most people a day to realize this. Well done Sony but this may cost you more long time as people don't like to get played...
It's a change from PS3, but frankly worth it. Free games as long as you're a subscriber is the main reason why I've been a PS+ member for the past year.