The President declared a stimulus had to happen and Congress finally passed a BILL which was signed into law which has lots of directives in legal mumbo jumbo and now the IRS has to translate that into english and create the forms/instructions on how this will happen which takes TIME ... so don't expect anything concrete until the end of the week at best. For now everyone is guessing how things will work based on what is being gleaned from the bill and prior history on stimulus checks.
Patience will be needed but the little we are sure of is that they will be basing the check on the 2019 returns if you have filed or the 2018 return if you have not ... it is up to the taxpayer to decide on if they want/need to file either returns. For those on SS or VA benefits who do not normally file they do not need to file to get a check.
