Well, the article lists areas where "the 4G LTE Network build is under way." According to your schedule, the San Diego buildout should be starting this month, I was disappointed to not see it in that list. Of course, San Diego isn't alone - I would have expected to see San Francisco on the list and it isn't there either.
In a later post you mention "the launch deadline of December that they probably used to make this list" (I underlined "probably"). I don't agree with your interpretation unless it's based on information not in the press release. The release doesn't say anything about a launch date - just where the build is underway.
I apologize if this is sounding like I'm criticizing you, but I don't mean it that way. You are providing a real service, since usually Sprint won't tell us anything. But until some evidence surfaces that the buildout in San Diego really has begun I will remain convinced that this signifies a delay.