Far as I know there has not been a big change in the activity in Bárðarbunga volcano today (15-October-2014). Largest earthquake today had the magnitude of 5,4 and was felt in Akureyri. When the magnitude 5,4 earthquake happened the caldera dropped 15 cm in one go according to the GPS measurements in its centre. Over the past two days earthquake activity has been increasing in Bárðarbunga volcano and along the dyke that is erupting in Holuhraun. After the largest earthquake today the earthquake activity appears to have dropped a little.
Other then this I don’t think there is anything more in news of activity in Bárðarbunga volcano. Since day to day activity remains the same. Tungafellsjökull volcano continues to show earthquake activity following the stress changes that are now taking place in Bárðarbunga volcano. I still think no eruption is going to take place in that volcano [Tungafellsjökull volcano], at least as things stand at the moment.
Those how are interested in hearing the magnitude 5,4 earthquake that happened today. It is possible to do so in this two audio files that I did convert from my earthquake data earlier. This is how my geophones at Böðvarshólar (bhrz) and Heklubyggð (hkbz) “hear” the earthquake. Each audio file is only 2 seconds long. The sound from Heklubyggð is louder since the earthquake signal is stronger there. Both audio files are released under Creative Commons Licence. Please see CC Licence page for more details.