I wouldn't want to speculate on the exact timing, but believe that Pilot's original question was whether the up-listing could be finalized while we still are under the temporary SLTDD stock symbol.
IMO - the reply more than answered that question by essentially stating that some take days, some take months, but it is possible for Solar3D's to be completed within that 20-day duration.
Depending upon when the actual process began with the senior exchange it potentially could be completed later in this week, however, you have a good point about the share availability. Hopefully, that will all be sorted out in the next day or two . . .
If up-listing is imminent then we may not see any news until that has been completed. If the process is bogged down a little and is looking like it may take weeks then we probably will get some news in the interim.
All IMO of course