Obviously this info is out there somewhere.  Can Anyone Report an Excellent Source?  Where are you hearing this info?

What gets transmitted with the efile is similar to what would get reported on a paper return.  You would only include the bank info on the paper form if you were getting a refund.

The IRS is planning to have a website where folks can enter/update their info for direct deposit.  Details will be forthcoming but it was mentioned in this information release:

https://www.irs.gov/newsroom/economic-impact-payments-what-you-need-to-know

The IRS does not have my direct deposit information. What can I do?

In the coming weeks, Treasury plans to develop a web-based portal for individuals to provide their banking information to the IRS online, so that individuals can receive payments immediately as opposed to checks in the mail.