And quoting upwards is so Microsoft.
Let's hope the expansion comes to Windows first.
Since all versions will share the same galaxy, expansion packs would most certainly have to be release for all platforms simultaneously. As for that "timed exclusive console bonus content that will make PC and Mac players jealous" (yes that is going to be a thing and yes I was quite surprised, too, when I learnt about it, and how this rather significant information was delivered - in an article in a dead tree magazine for XBox... go figure) - I expect one or two ships to be released on all platforms, but locked out from the ingame shipyard on all but the consoles, therefore still having technically the same game on all platforms.