Your friend is mistaken.  1040X cannot be Efiled.  What he's seeing is the acceptance of the original return.  1040X can only be printed , signed and mailed in.  

Turbotax forms release dates

https://ttlc.intuit.com/community/forms/help/irs-forms-availability-table-for-turbotax-individual-pe...

It still shows the 20th, Im sure that will change to the 26th at some point as well.