No, my understanding was that the universe "changed" when Nero (and Spock) went back - it changed with Nero's attack on the Kelvin.
So, if we follow the "Parallels"-theory, that one event created a whole new parallel universe. But before that event, there was only the "old, established" universe.
But it doesn't change the fact that in 129 years the Romulans star is gonna go supernova. That can't be changed.
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