I hope the optimists are right, it just doesn't look like it to me at all. It looks to me like we're speeding along right into the worst predictions and beyond. We're building lots of green energy production but it seems to just come in on top of existing and new fossil production not replace it.
It does seem like the CO2 output is plateauing which is good, but we really need it to start declining drastically very soon and I don't really see that happening with the current political climate. Also remember CO2 is far from the only greenhouse gas - methane, nitrous oxide and fluorinated gas emissions all seem to be rising rapidly still.