Magmatic in nature.
There has been occasional steam emissions, short duration Harmonic Tremors, elevated CO2 and SO2 levels, snow melt off at the sumit due to ground heating.
However there hasn't been the long duration harmonic tremors or intense swarms that usually precede an eruption by a few days or weeks.
It's still likely to erupt soon, although the probobility is falling off a bit. It appears to be entering a steam emiting period of activity, and might stabalize there for a while.