2 great things happened at Stratford this evening:

1) an eastbound Central Line train pulled in EXACTLY as I arrived at the
station, saving a 10-15 minute wait or a walk to Leyton. Result!

2) I spotted the staircases at the eastern end of the platforms appear to
be operational but given point 1), I didn't get remotely long enough to
check them out. But they appear to get you from the westbound Central
Line to the London Overground platforms - I assume they'll also let you
out at the Stratford (old) shopping centre side sooner or later.