Photoshop Trial is always Extended.
If you are serializing using serial number after install, then depending on your serial number, it will show/hide Extended features.
As per your post above, you went to creative.adobe.com and download AAM and then installed PS CS 6.
In AAM, it will only show PS CS 6, it will not show "Extended"
Try to launch PS CS6 and see if you have 3D menu or not ?
If its there, then its Extended, if not then its Standard
I am just using a trial for 30 days, when I opened it this is what showed up for the welcome screen: [link] but the CS6 Extended trial opening screen looks like this: [link] My friend has the extended version and I have seen her open it so I know what it looks like.
I tried searching for the Photoshop CS6 Extended trial download page, to find the page adobe used before they started using creative cloud but it just went back to the creative cloud download page.
If it is standard is there a way to change it to extended?