This is a very good sign as the Tesla guy doing the commissioning is the last step. Assuming there are no issues (maybe 80-90%?), he will activate it himself. It could even be active right now, but I would expect he will probably finish up tomorrow (he said Friday because he didn't want to overpromise and doesn't know if an issue will come up).
Furthermore, due to the somewhat "remote" locations of the superchargers under construction, it is highly likely that he is activating them all on one trip. So it's not impossible that the superchargers listed above could all be active as soon as this weekend.