The lights are on
Hoping for a Half-Life 3 reveal at E3? Keep dreaming. Valve said it has no announcements planned this coming June.
Valvetime.net was first to receive the confirmation via a purported e-mail exchange with president Gabe Newell, who said, "We're not announcing anything. Really. We are not announcing Half-Life 3 or Portal 3 or Left 4 Dead 3." He continued, "We are going to be showing stuff everyone already knows about (CS: Go, Dota 2, 10 UI',...).
Valve later confirmed independently to IGN it will not be making any new announcements at E3.
There's always next year, right?