What sort of current events do you want to find out about how quickly, and why?
You should consider, if you haven't already, the possibility that the value of learning about such things quickly is almost always almost exactly zero. Suppose e.g. there's an enormous earthquake half-way around the world from you, and many thousands of people die. That's a big deal, it's very important -- but what immediate difference should it make to your life?
One possibility: you might send a lot of money to a charity working in the affected place. But it seems unlikely to me that there's much real difference in practice between doing so on the day of the disaster and doing it a week later.
Another possibility (albeit a kinda callous one): it may come up in conversation and you may not want to sound bad. But I bet that in practice "social media, blogs, word of mouth or personal research" do just fine at keeping you sufficiently up to date that you don't sound stupid or ignorant. In any case, what you need to know about in order to sound up to date is probably roughly what you get from existing news sources, rather than from a hypothetical new source of genuinely important, sensibly prioritized news.
I appreciate the distinction you make between urgent and non-urgent news.
Finding out about things quickly isn't necessarily my priority. In fact, one of my problems with "regular" news outlets is that they have poor sense of time sensitivity, and promote news that's stopped being useful. The value of knowing about Icelandic volcanoes grounding all northern European air traffic is actually very useful to me when it's just happened, but in a week's time I may as well read about it on Wikipedia.
I'm more concerned about finding out about things at a...
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