A couple of things stand out for either revision or reversal next quarter.
One is the increase in govt spending and the other the increase in net exports. Together they added about 2% to yesterday’s Q3 GDP release. So excluding those two suspect numbers Q3 would have been reported as up only 1.5%.
The following chart shows how the reported numbers are out of the norm and therefore subject to either revision or reversal, as has happened repeatedly in the past.