It’s been 5 years since the cycad sprouted new leaves, it’s just done it again! According to this University of Wisconsin page many cycads produce leaves, at most, once a year. Which I take means that it could be several years between growths. Before this year the last few years have been very dry here, I wonder if the cycad has been waiting for more water before sprouting.
This is the first time it sprouted new leaves back in 2012. All 3 times it’s been mid December.