well panda 3.8 has been updated on 25th of June.It was just a refreshment of the older version of panda and affects less then 1% of the websites.so not to worry about it and just follow up the Google guideline for better position of your website.
Are u sure once again Google Panda coming in this month? If yes, Let me inform also please which type of change it will be bring this time. I really update about Panda update its again and again updating.
I think what all the updates Google is impending in their search engine are actually good for us and users. Its just a thing that your website is hit by the update and suddenly you start disliking Google? Don't get down with that! There are ups and downs! Work again, follow the best practice and you may again see your website up. I think Google is by far the best, and its evolving everyday to make our life easy.