Arthur: I know you are asking the RS team to answer your question, but I think that "pushed out" is a computer age term for "released." In the olden days of, say, the late 20th century, Microsoft would "release" a new version of Windows. Now, a new version is ""pushed out."
I have become more aware of these sorts of terms since studying Spanish. Sometimes I get hung up trying to find a way of expressing an English idiom or colloquialism in Spanish, and my tutor will tell me to think of a more formal way of expressing my thoughts and I will usually be on track.
As far as accessing the upgrades, I'm afraid I can't help you.