Additional Software is available when you register. You get Nik Color Efex Pro 3 Wacom Edition 6 which are a set of photographic filters for the use in digital photography and transforming your images. You get Wacom Brushes 3.0 which are additional brushes for your use in Photoshop and Photoshop Elements. And you get to pick two out of these three products: Photoshop Elements 7 for Windows or Photoshop Elements 6 for Mac, Autodesk SketchBook Express 2010, or Corel Painter Sketch Pad.
Reversible table makes much more sense than two sets of buttons on each side. Now you can maximize your productivity of both of your hands by having everything on the side that you would use it most on.
The mouse is not really new, but not something that I use much. Along with the pen, there is also a mouse that comes with the Intuos4. Like the pen and tablet, the mouse too is black. For those who use the tablet 24/7, the mouse is there to replace your mouse so you can keep your tablet on your desk the whole time.
The more I work with the Wacom Intuos4, the more I appreciate the 16:9 aspect ratio. I am not sure how this will affect someone with monitor that has a 4:3 aspect ratio, but I think that this can be rectified by limiting the area within the configuration setup.
While it will take some time to really get use to, I do like the ExpressKeys. The reason I say this is that with the Intuos3, the keys were different shapes and different directions. Here they are all the same size and right next to each other and it is easy to think that you are hitting one when you are hitting the one next to it. Not a big deal, just a bit of retraining.
Another great innovation is the Touch Ring. With the old tablet, you had the Touch Strip, but you could only assign it one function. Now the new Touch Ring can support four functions. And switching is all with the press of the central button. The Ring functions much like the ring on an iPod.