I wrote in via the contact us form and FlySFO responded, in part:
And, BIG NEWS, the new airside connector between Terminals 2 and 3 is opening in the next two weeks.
The space between Terminal 2 (T2) and Terminal 3 (T3), which includes updating the pre-security connector, building a new post-security secure connector and constructing a 6-story office building. The post-security link will allow passengers the convenience of walking from T2 and T3 to International Terminal G without exiting security.
will put the rest in the "Connecting in SFO" thread.