The NEC ND3570A DVD burner was released by NEC in February 2006.
The NEC ND3571 burner adds support for LabelFlash but both drives - together with the ND4570 and ND4571 - share the same hardware and only differ in firmware. Do not try to simply flash a NEC 3571 firmware on a NEC 3570 drive or vice versa. This will NOT work. Unlike previous drives, the ND3570 and ND3571 are able to start 8x burns at 6x now.
Click here for detailed specifications of the NEC ND3570A and ND3571A.
The following firmwares are available for download here:
Overview on the used writing strategies