There have been at least 2 different versions of the n52te before this. I actually own 5 of these for my different computers. I've been buying them since they were released a couple years ago, and slowly outfitting all the computers I use. 2 of them are earlier ones and have more rounded usb plugs, and the backlighting isn't as blue as the later ones. Also pressure requirements are different. The later ones seem to require more pressure. In my opinion every computer should have one of these devices. It makes using photoshop, 3d graphics software, and pretty much any development application much easier to use, as well as being good for gaming.
All the keys have always been customizable, that's kind of the point of the device, so not sure what this version has that's different, except the new logo which basically just advertises what has always been the case, that it's razer onboard memory that's powering the te, as opposed to the earlier standard n52 that required a driver program to be installed in order for the device to work at all. Once you program the te, it can be plugged in without the driver and act as a standard keyboard with customized keys, in any computer with or without the driver.
The te has much nicer lighter keys than the original n52, which is what Ripster customized. Those keys are relatively crappy rubber domes compaired to the te.