New
#880
Mine shows no expiration date and I'm still in the Insiders program. I don't think that will tell you anything. Build 10240 has no watermark and no expiration date. No Pre-Release connotation either. But its still using common product codes. I have the same Product code as others here and I've seen my code posted on the internet. I'll be waiting until the 29th to see if I get a new key that is unique to me.
It might be RTM, but its not the Official RTM until Microsoft says it is. Not to me anyway. I don't see the harm in waiting. What did opting out change for you? What advantage is there to doing it now versus latter?
just getting a new NVidia driver from WU for those on NVidia graphics cards 353.54