Polaris is a Cepheid variable. It’s been getting dimmer and brighter for a long time. Its various sputterings has suggested that something interestingly unstable is going on. If I recall, it’s large enough (8-12 solar masses) that it could go supernova. But if it did, we won’t know about it for 600 years. So, whatever we’re seeing now is what it was doing 600 years ago. (Yawn...old news.)
But it’s posted as Breaking News.