It's definitely something that was announced, but as the program manager pointed out, it is always changing.
However, as Jimbo mentioned, there are many ways to change your ranking. We want people to be part of the community for the community itself, and not solely for increasing their ranking (anyone could just write reviews of 50 toys then, even if they hadn't used them, in order to boost their ranking). Also, all your reviews can increase your ranking when other people vote on their quality!
I'm so glad all of you are a part of our community.