It was a long time ago.. I remember I used to get excited about reading "kernel traffic" each week (looks like the last issue was 2005, website online still). Then they got overwhelmed or bored or something and stopped. Used to read Linux Weekly News(looks like that is still going), but maybe been a decade since I looked there too. Until the 2.4 series kernels at least I would frequently build custom kernel config and custom patches on occasion too.
I have used Linux daily for about 22 years now, though for the past maybe decade or more for me it has been "good enough", and I suppose as such I haven't found anything to get excited about since.
Linux news that would excite me however is introduction of a stable ABI that crosses minor and at least 1 major version number(realistic version numbers over the span of years). I gave up on that happening probably 15 years ago, but that's one thing that would get me excited.