There is no half life 3, only half-life, half-life2, half life episode 1, and half-life episode 2. The orange box came out for consoles (at least xbox) I do believe and it has these games:
Right now most people are not even sure if it will be Half-Life 3, or Half-Life 2 Episode 3
But i am one of those people who will gladly scoop it up if they ever release it.