Hasn't this been a more or less annual Oh-Bleep event for Warmistas for 5 or 10 years?
Yup, though more often in the Antarctic than the Arctic.
Personally I think there is anthropogenic warming, but it's not global warming, it's Arctic warming, and caused by soot and other particulate matter, mostly from coal burning in China, Russia and India. There are a number of empirical papers finding "light absorbing impurities" in the Arctic ice pack and arguing that all climate models supporting the CO2 hysteria understate the change in Arctic albedo (thus overstating any effect of CO2).