Seems Congress is currently winning the never ending fee diversion battle with the USPTO. As a result, efforts to expand USPTO satellite office to Dallas, Denver and Silicon Valley have been significantly slowed. While permanenet office locations in Dallas and Denver have been identified, the search for a permanent Silicon Valley office was recently halted as a result of the sequestration of USPTO funds (you know, the ones they collect from the public in self supporting fees).
The Detroit office remains open.
It seems unlikely that the planned satellite office will be anything but ceremonial outposts in the near term. Indeed, absent consistent funding, one or more satellite offices could be shelved indefinitely.