I realize that I must walk a very narrow path when posting this, so let me phrase it this way:
There is now easily findable official product brief PDFs and photographic evidence from private purchasers available on the public Internet, confirming that the controller is indeed an Intel chip with the very same model number as the one stamped on the DC S3700's controller.
That, combined with the significantly lower price compared to the DC S3700, makes this a potentially very interesting product for people looking for high reliability drives with consistent (predictable) performance.