They've announced that they are working on a new engine (Source 2?). They have acknowledged that some kind of "Steam Box" is in development. Hasn't 2013 been tossed around as a possible launch date for that hardware? Or was that just a rumour?
Given all of this, and the amount of waiting we've all done, don't we have more hope for a Half-Life 3 unveiling in 2013 than in previous years?