Today Japanese website 4Gamer published a correction that they received with regards to an interview they had with Sony Interactive Entertainment Engineering Division Chief Masayasu Ito, clarifying what interface the PlayStation 4 Pro will use.
Originally mentioning that both the new PlayStation 4 Slim and the upcoming PlayStation 4 Pro would be using the Serial ATA (SATA) 2.0 interface for their hard disk drives, Sony has corrected the remark, stating that the PlayStation 4 Pro will actually use the SATA 3.0 interface instead.
This change increases the data transfer rate with the hard disk drive from 3.0 Gbit/s to 6.0 Gbit/s, significantly improving the storage and data transfer performance of the upcoming console.
Elements like loading and installation times may be affected as well, but the public will have to wait for real-world tests in order to know for sure.