E-filed original returns, like paper returns, are never examined before acceptance.  There are some computer filters that slow down processing for both types of returns.  E-filing simply removes the mailing and mail-opening delay (in normal times, 3 to 5 days) and the IRS data entry delay (in normal times, 2 or 3 days).  

Amended returns have always been examined by a real person, if only to determine that they meet some criteria to bypass further examination by someone with more training.  That is going to continue because IRS thinks it prevents fraud and unintentional errors.  The publicity for e-filed amended returns always points out that you can check the status of your return using the IRS tool, a week or so after it is transmitted.  They're still being processed in the order received -- it's just that those received in digital form, get in line faster.  They won't be put at the front of the line, because there are too many that won't be accepted electronically, and there are too many paper returns that are accruing interest in higher amounts or for which the statute is about to expire.