If you print a copy of your e-filed returns, the bank routing number and your bank account number will be "XXXXXX'd" out as a security measure.
There isn't any good reason to have that information floating around on a piece of paper where it isn't needed.
If you choose to print and file your return by mail, the information will be displayed. This is another reason why e-filing is a safer method for submitting your return - it avoids having your name, social security number, address and banking information traveling cross-country in an envelope.
The time to verify your bank information is when you enter it, immediately before e-filing.
