I'm not saying it was or wasnt the release version, but it seems there are a few ppl who had to do a hard reset to get 100% functionality. That means there are a few possible tweaks that can still be made before the OTA. When I create images at work and upload to our server, I roll them out to a few pc's to test and tweak the image as/if needed. Not usually major things, but things that do make a difference in certain aspects. I also keep the file name the same, no need in changing version/file numbers resulting in revised emails, documents, etc. Again, the update could've very well been the final, but the possibility the OTA version is slightly different is true too.
I have the file saved, just worried about chance of hard reset but theres no guarantee that won't be needed with OTA push either.