LOL - everyone knows this. Every quarter. It is referred to as “Advance” numbers. It’s a “flash” report for those that work in corporate finance. It is always revised (there is a set schedule if you would like it).
And yes they are estimates. Of course they are. You cannot measure the economy exactly. It’s just not possible. Anyone who thinks there is an exact measurement of a $17+ trillion economy is an idiot.
Where can I find the set schedule?