Today (Tuesday the 24th) is exactly two weeks after Musk publicized the service loaning program. That said, I'd say it is reasonable to expect an announcement regarding Superchargers by Friday.
It is already known they plan to announce the following SC sites: the Pacific Northwest, Florida, Texas, Illinois, Northeast and California. I think this will produce 10-12 new 120kW charging stations. Also, look for the hinting of more exciting charging installations in the future....I believe those looking for big news here will be disappointed.
I would hope Tesla turns their attention to a software upgrade in the near future that can direct drivers to SC locations. What does everyone think of the new 120kW chargers? Assuming no changes are made to software, this can provide 200 miles of range in 30 minutes.