The latter update can be downloaded directly from the device by finding the update option in the about menu under settings. It includes a fix for the touchscreen issue that some users have been reporting. I haven't encountered this problem so I can't say if it has been fixed, but I do have mixed reports that suggest that not everyone is seeing an improvement.
The update for the T68 Lynx also adds a new forced refresh option. Users can make the ereader refresh a fuzzy screen by holding down the menu button. This could prove useful while using Android apps, but I for one haven't had an issue with the screen refresh so i don't see what has been gained.
Please note: the two different T68 models use different and incompatible firmwares which will almost certainly not work on the other model.
The Onyx Boox T68 is an ereader which runs Android 4.0 on a 1GHz CPU and has a 6.8" screen. It's available in a variety of markets, including Europe, Russia, and the US. Depending on where you buy it, the hardware specs and software features will be different. In the Russian market, for example, there are a couple related models sold under the T76 model number including one without a touchscreen.
As I mentioned in my review, in Europe there are two competing retailers with different models. I bought the one named the Lynx, and I have found it possible to turn it into a nifty little E-ink Android tablet.