A few months ago, Gurman claimed that the M1-based Mac Pro was cancelled in favor of an M2-based version.
“They also had an M1 Mac Pro ready to go months ago. But they scrapped that to wait for the M2 version.”
With the company scrapping its plans for an M1 Mac Pro, Gurman says in the interview that he thinks this Mac will ultimately be announced at the end of the year and then released later in 2023.
If true, that would explain the Mac Pro missing the originally stated 2-year timeframe.