That’s really surprising and seems the Extra+Info bug, which changed the Lumia Cyan to Lumia Denim on some devices has a funny side too. Most of us want Microsoft to not only release Windows Phone latest OS updates to developers preview enabled devices but also the related firmware.
Lumia Cyan firmware reached to developers preview devices later than normal devices because of compatibility issues. Now, we don’t know whether this bug means some incompatibility between developers preview enrollment and Extra+Info update, but here is hoping that dev preview devices get Lumia Denim without any issues this time.
Thanks to everyone, who tipped us!!