After you file

yes, the IRS is using either 2018 or 2019 to process the stimulus, whatever is available.  

 

what no one knows is when the IRS is using 2018 instead of 2019.... from many of the posts i see on these board, it appears that if the 2019 tax return is in processing, they are waiting to provide the stimulus until the 2019 tax return is settled, but I have no facts on that, just a sense from everyone's posts

 

if the GET MY PAYMENT says they will update you with a date, you will get the stimulus shortly but again would not surprise me if that waits until 2019 processing is complete.