At the moment, all the changes and historic data from July 2015 are well documented in the website. So, I didn't feel compeled to poorly copy/past it in the revision blog. 

With that said, this blog feel a little short or poor in information and you are totally right, it would benefit from having more explanations. 

I will follow your idea and make the next one with more details on the changes of the coins in the index.

I'm also gathering the data from the markets of Bit20. I will also add the evolution of the order books, supply, market cap, numbers of holders of the asset and so on .. the next revision will probably feel like a whole "report" of the index composition changes and its evolution on the markets. 

I'm gathering information on the BitShares exchange to add also in the next revision that will be more a "repport"

If you are curious about the last revisions, you'll find them all on this page : http://www.bittwenty.com/bit20.php

Thanks for your ideas TombStone ;)