A quick glance at Flightaware altitude and speed recordings shows 'normal' speed with altitude until 200ft where the speed has reduced to 85kts. Whilst these scales are probably prone to inaccuracies close to the ground, a look at other flight's altitude vs speed recordings shows that even down to 200ft, the speed recorded is still usually 'normal'.
85kts at 200ft, would perhaps suggest a realisation that the approach profile was not right, followed by a rapid raising of the nose without sufficient thrust (for whatever reason).
I guess we'll know soon enough.