You may have already seen this, but David Braben told PCGamer today that there probably won't be cross-play between consoles and PC:
So PC updates won't be held up by console patch certification.
Everyone would still use the same background simulation.
Source:
http://www.pcgamer.com/david-braben-explains-the-problem-with-elite-dangerous-cross-play/
"I think the challenges for us, which sort of fights against it," Braben told PCGamesN, "is we’ve also said that we’ll continue to do updates across all platforms, and what we didn’t want was PC updates to be held up for whatever reason, like if there’s a delay on another platform."
So PC updates won't be held up by console patch certification.
Everyone would still use the same background simulation.
Source:
http://www.pcgamer.com/david-braben-explains-the-problem-with-elite-dangerous-cross-play/