Thanks for linking my article (was a bit rushed as it was breaking news at the time). Written two additional articles since then.
To sum up:
They'll be ready to complete the transition to Side B on HST next week.
Atlantis will rollback Pad 39A, back to the VAB, on Oct 20 (currently)
Endeavour will then rollback from 39B, to the fork in the crawlerway, and then roll forward to take up residence at 39A for a NET (No Earlier Than) Nov. 14 STS-126 launch.
Outlook at present:
STS-119 will be bumped from Feb.
STS-125 will take up the STS-119 window.
Discovery will become the LON (Launch On Need) vehicle STS-401 (STS-400 is reserved for Endeavour).
STS-119 will launch in March.
The other option is to launch Discovery in her nominal STS-119 window in Feb, with STS-125 then slipping to April, with Endeavour returning as LON (STS-400). Soyuz and Solar Beta Angle cut out considerations in play for that scenario.
As John Young would say, it's going to get "sporty"