Is alarming that the epicenters are scattered over a large enough area
[link to en.vedur.is]
but all of them are a little bit away, to the west, an active rift zone
[link to volcanocafe.files.wordpress.com]
Given the obvious manifestation of this activity on all monitors tremors throughout Iceland
[link to hraun.vedur.is]
you can reasonably assume that we observe are not purely tectonic activity but also the movement of magma. I think this may well end up underwater eruption somewhere in that area by Surtsey type.