I guess I'd say that because massive caldera forming eruptions are pretty rare, another one from Okmok can't be ruled out but isn't likely. So I'd expect (in the pattern of other Aleutian volcanoes) an ongoing eruption for several months, which means intervals of days to weeks between significant ash-emitting eruptions. The item on the blog I just linked to also indicated possible lava; they called it a low-level thermal anomaly so it could also be a hot plug in the vent, which could have been coughed out by the more recent eruption.
Thank you for all the information cogitator.