In the latest beta 1 download, still most of the module's aren't finished yet.
And the module positions button throws a 404.
But it's a great start!
I LOVE the theme folder structure. it's much cleaner.
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One think I would love to see. In Opencart for example, you only need in your custom theme folder the files that are different from the default theme. You don't have to copy every file.
From a designer's perspective, I love that because updates are much easier.