Arcana Unearthed/Evolved

[PnP Fan]

I was thinking of putting together a Planescape campaign (3.5) in the near future, using Core, Planescape setting materials, FRCS, ECS, when one of my players asked if he could use Arcana Unearthed. I've got a copy of this, and now I've also heard of the Arcana Evolved.
My questions:
What is it?
Is it just the 3.5 version of Arcana Unearthed?
Or is it something else entirely?

[Roland St. Jude]

It's an expanded version of Arcana Unearthed.

What is Arcana Evolved?
Monte Cook's Arcana Evolved is what I call the "Director's Cut" version of Arcana Unearthed. It's 432 pages in full color. We pulled out all the stops and got some of the best artists in the industry to lavishly illustrate it. It includes all the material from Arcana Unearthed, The Diamond Throne, and even most of the Player's Guide from the screen. Plus a lot more.

You can read the Malhavoc Press release here.

(Of course, if you have a copy you know it's a very different book than the similarly titled WotC book Unearthed Arcana - but I figured I'd mention it to forestall any confusion others may have.)