This based on news from Rúv. I am not translating the news item it self. The link is at the end of this article in Icelandic.
According to latests news on Rúv. Öræfajökull volcano continues to inflate at an increased rate. This has resulted in larger earthquakes in recent months and larger energy release in those earthquakes. Deformation has been clearly detected in Öræfajökull volcano and magma is now collecting just above 5 km depth according to measurements. Earthquake activity has increase compared to 2017 and seems to be increasing at the moment.
Rúv News
Kvika að safnast saman undir Öræfajökli (Rúv.is, Icelandic)
This might be a totally uninteresting little happening. There was an M2.1, deep (18.8 km) straight under Austmannsbunga IMO station, as of current manually checked data.
Last few years, deep earthquakes under the Katla caldera are often followed by shallow activity increase.