Reports of the new system that went into full effect this year indicated that the Packers had been using GPS for a couple of years. Not sure if it was an experiment, or different provider, but it was clear they had more than one year of data.
The story about the nutrition guy was along the same lines. The reporters knew the guy was working for the Packers, but the announcement came well after he started his job according to the beat guys.
The center pulling isn't new, but the center pulling with a Guard is a bit weird. It leaves a huge gap to penetrate through if you get bad D alignment matchup.