Valve won't be "showing any titles" at this year's E3, so there goes everyone's hope of seeing the next Half Life game. The publisher confirmed with VG247.
That's not to say that they're skipping out on E3, they just won't be showing anything. Valve wasn't listed on the exhibitor's list, but then again, Gabe Newell still made an appearance at the Sony presser last year.
Valve just released Portal 2 last month. As usual, they've been tightlipped on whatever it is they're currently working on. If it even exists.