The passport folks must have hired a lot of new people and geared up to be ready for the re-launch of online renewals.
I mailed my passport for renewal on Tuesday May 21 - regular mail not priority from NC.
On Thursday June 6 the new passport was in my mailbox.
No expedited processing and no expedited shipping.
Maybe I just got lucky but 16 days including USPS regular mail delivery both ways is pretty impressive.