Half life 3 on the way?

Half life is one of my favorite game series. I'm sure the case is the same for many others. Valve did an amazing job with them. We have been waiting for years to the continuation of the cliffhanger ending of episode 2. There is a lot of story to work with. What happened to the combine? I'm sure there are at least some left on earth. What about the ship "Borealis"? If you think even farther back what about our HECU friend Adrian Shephard? There are many more questions, but we won't know until Half life 3 comes out. I don't see why the game won't come out. I hope this vaporware title ends well.