Apple software version naming convension

I downloaded the 2nd GM version of x开发者_如何学JAVAcode 4 about a week ago, the public release just came out today, is there any difference between the GM and the public version? Does GM mean RTM or RC?

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You want to have a look at the build numbers. GM2 was 4A304a and the today released version is 4A304a.

So they are the same.