You will. Dev preview is only a bit in advance compared to the final release, and is then updated if necessary to bring it on par with the official release when it is released.
This is why we got a small update just before the release of the final 8.1 (on the Lumia 630, first phone shipping with official 8.1).
You now have the final 8.1, identical to that of the Lumia 630, and will only download Cyan when released for the Icon.