You say that Google will be doing this transition along with everyone else, but you won't be feeling the same pain. Google's current cert expires November 24th, 2014, so when you extend it then it will be for 1 year and your new cert will expire before January 1st, 2016 which is pretty convenient for you because that cert (even if it is SHA-1) will still show up as a green bar through Chrome 41 so it will have no impact for you. I also second eastdakota's response that this was pretty crappy to drop as a Friday afternoon announcement.