I've found the "In this version" but it doesn't have a download button anywere, looks like it just gives info on the product?
Log in to https://creative.adobe.com/ with your Adobe ID. After login, you will see the drop-down as well as the Download button. For more information, please see the reply posted here: http://forums.adobe.com/message/5485418#5485418.
It looks like you are looking for a CS6 trial download. Trial downloads are available only for the most recent version of a product.
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