Windows 10 Insider/Technical Preview for Phone (10.0.10586.338) released to "Release Preview" channel device

Nokia Lumia 520 and 525 release Windows 10 Technical Preview for Phone (10.0.10586.338) from Insider Preview under "Insider Release Preview" channel.

But for the device under "Production" channel or not join the Insider Preview, it did not receive any update and still running on the build 10.0.10586.318

Windows 10 Insider/Technical Preview for Phone (10.0.10586.338) released to "Release Preview" channel device