The Logitech Revue is a 4 year old device. It shipped with Android 2. I highly doubt we will see any updates for these. And if I remember correctly, its was a major flop. I got one for free from Google, but hardly used it like I use my current Android Tv.

Google TV is dead. Box it up and buy an Android TV.

they are still usable (although you have to play some tricks to get a working version of youtube)

Logitech abandoned it, then google abandoned googletv gen 1, then google abandoned Google tv again (having done nothing they promised).

The only reason I have an android tv device is i got a nexusplayer for $25 so I'm not invested in it.

TL;DR when it comes to google and TV, http://i.imgur.com/6K6YhVR.gif

When Android TV was announced there were rumors (or chip vendor statements) that some Google TV boxes would be potentially upgraded, but I've yet to hear this occurring.