This isn't your ordinary eruption scenario, for complex reasons I summed up here. (Am doing updates at that post, too.)
That's why everyone is treating this like a big news story, even though the eruption only started a few hours ago, from what I have learned thus far on Twitter.
This could get bad, really bad. Best-case scenario is that it plays out like the 2002 eruption and just trashes part of Goma. Sigh.