I hate to be pessimistic, but me and my better half think they are mothballing it.
Usually, by the time the structure gets to the top, they're starting on other trades from the bottom up - cladding, insulation, first fix plumbing and electrics.... but none of that is happening. We think BH were committed to the structural package but have stopped the rest of the sub-contracts. It's really unusual to see so little activity at this stage.
I really hope I'm wrong about this being it really WILL be a dreadful eyesore!!!