Don't know how many of you have seen the rumor, but word/buzz around the Internet is that Valve may announce a Steam Box, basically a console that runs Steam.
The console.. would be different as it wouldn't be a single item released by Valve, but a standard in which they establish, and license out to other partners.
Anyhow,
http://www.theverge.com/2012/3/2/284...gaming-console
This provides more details about the rumor.