Hello hopefully can help clarify/summarize parts of the past 21 pages of thread.
We submit an application (complete) -> GW reviews it and decides to either put us on hold for re-review at a later date(vast majority of applicants) or an immediate interview. At some point of time later (which is apparently recently), the GW adcom will go back to everyone they've put on hold and rereview them (per someone earlier in the thread it means that a second person reads your application). Apparently, those whose portal goes from hold -> under review are likely to get an II.
On another note, anyone on hold since July and still living in the hold?