I loaded the Beta of E9 on one of my laptops. I'm sure I'll get used to it, but they've moved the favorites button to the upper right, all the way across the screen from the back button. This isn't terrible if I'm using a mouse, but not so great with a touchpad or little eraser thing on an IBM.
I don't see any really advantages or featuers - keep E8 if you've got it.
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