Nope. Thats not how features work in Opera. Major features like the VPN don't 'jump forward' in version numbers. It was introduced in 39 Alpha (Development channel), then was promoted to 39 Beta, and will finally be released in, you guessed it, 39 Stable.
Yes. Hit the 'Toggle list view' button in the bookmarks manager. Its to the left of the search box. I don't know if they will have the same icons as in Firefox as I don't use the browser and have never imported anything from it.
I have Opera Next installed, just to make sure the new and inferior version doesn't pollute my main browser. It also allows me to keep track of changes to see if there's any chance of migrating to it yet. Opera is slooowly adding features to it so it may eventually approach usefulness, but I'm generally a huge naysayer on this. Notes alone is a blow to lose, it's such a super-quick way to copy in boilerplate text or links I have saved - right click and pick the note.
But try installing Opera Next. That gives you the bleeding edge version and the last good version 12.16 side by side.