This quite possibly, but my speculation is they will make the first batch (production test vehicles)in Nevada. From there once the finished trucks come off the line they will load them up use them to go to Fremont to deliver battery cells. Testing and delivery all in one shot. Then once validated they will produce at whatever factory will open up later.
That's possible but in the long run it seems to make more sense to build Semis at a hub for vehicle manufacturing, which the new Gigafactory will be and Sparks probably won't be. That's part of the reason I'm guessing they'll build the Semi at the new Gigafactory.
But this is all reading tea leaves -- anything is possible and Tesla seems to update its plans regularly.