That's just it though. They COULD have put in there "Early Q4" in the update timetable. We were once "Early Q3" but they chose not to label it as such, so that tells me they are not very confident they can get it out early. Heck any time before Nov 15th (1/2 way point through Q4) could be called "Early Q4". They are leaving a LOT of room as if they truly don't know if they can get this done before then.
And so he is holding himself accountable, yes it is a nice gesture and all, but what does that mean really? If it doesn't roll out in Q4, he will issue a public apology on his G+ page, and ask for our patience as they will push it out in Q1 and he will hold himself personally responsible then too?