The Sony BRAVIA Smart Stick was revealed in their recent blog … it’s based on Google’s TV device and comes with a wireless keyboard/remote. I’m guessing it has all the usual features you might expect from a “Google-based TV USB stick”
“The Sony NSZ-GU1 Google TV device we’ve seen pop up in FCC filings has been at least partially revealed today, and it’s called the Sony BRAVIA Smart Stick. The blog post doesn’t specifically mention any Chromecast-style features, but it is an MHL dongle that runs both Google TV and Sony’s own BRAVIA apps. The features are just like Google TV boxes Sony has released before, with a remote (that the FCC filings showed is at least similar to the previous ones) that has QWERTY and voice search support. Additionally, its “picture-and-picture” feature lets users see a browser in one window and TV in another.”
Soure: Engadget via NSZ-GU1 User Guide