Unfortunately it doesn't seem to extend to the other Shield products. My Nvidia Shield tablet hasn't had an update in many years.

Then again, this is probably why it is still fast :-P

I'm using it pretty much daily as an ebook reader and sometimes i use it to watch videos on bed by transcoding them on my PC (the hardware isn't that good to decode modern formats). Amusingly, these days i use it much more than back when it was new :-P. I keep it offline though (mainly to avoid wasting battery, there isn't anything in it i'd care if it caught malware by net osmosis somehow) and transfer files via a USB cable.