I'll be honest, I really thought virtually all Google AdSense publishers were part of the new AdSense interface, known as V3. They have been beta testing it for over a year now and I personally have been using it for a year or so now.
A year of beta testing a beta? Yea, Google is known for keeping things in beta - but they do deliver the beta to everyone sooner than a year. Meaning, they may be known for keeping the beta label on products, but it doesn't typically shy them away from releasing the beta to more and more people. A year long beta push, to me, seems long.
In any event, there are tons of threads from Google AdSense publishers on the AdSense beta console. Like I said, I have screen shots from a year ago, and yea - they have slightly changed. Some threads are at Google Blogoscoped Forums, Google AdSense Help, and WebmasterWorld.
The main questions I have seen are what is the "coverage" metric and the "RPM" metric. A thread specifically about the coverage metric has Googler Guillaume explaining that:
This is a good question. Unfortunately the documentation is not complete yet, so here is a temporary explanation:
Coverage is the percentage of ad unit impressions or queries that showed ads:
- A coverage of 100% means that AdSense was always able to provide ads to match the content of the page (Content) or the query keywords (Search).
- A coverage of less than 100% means that AdSense was not able to find ads for some ad units or search queries, which didn't show ads as a result.
RPM is calculated by adding up the price charged to advertisers (CPM) for each ad block on the webpage, then subtracting the cost of delivering that advertising.