One thing I've noticed that *could* be related is that, when I'm unlocking the screen, it consistently works on the first try. With my prior NST, it usually took two tries. I'm not sure if that's related to the hardware (I read there were also upgrades to touch sensitivity on the hardware itself), due to the software, or just some unique quirk in my prior device.
I am not sure if this answer belongs here, however, I have noticed that the dictionary on the NSTGL is not as confusing, when you are reading a definition, as it is on the NST. By confusing I mean that it is easier to read the characters, especially those in italics.