Yes, that's what I'm seeing as well. TVLine: "Multiple sources confirm, however, that the decision to bring HoC to an end was made months ago and was not in response to the allegations. (A Netlix rep confirms this.)... Production on House of Cards‘ sixth and final season began earlier this month despite the fact that Netflix never officially confirmed that it had even ordered a Season 6."
I'm not surprised the Spacey news made them want to go public with that decision, though.