But what can it do?
Having the latest versions of utilites is nice. If you're a hobbyist, that confers bragging rights within your group of nerdy friends who are still running last month's version.
Having the latest and greatest kernel can be a good thing, too. If you happen to need support for new hardware (and most kernel relases these days are for bug-fixes, hardware support and minor tweaks that nobody notices). It can also be a bad thing, when bugs creep in, or if poorly thought out changes cause more hassle than they're worth. However, ultimately an O/S is a bit like the engine in your car - it does its stuff unseen and if you do need to get involved with it, that's probably a sign that it's failing.
So, as with any new release of Linux, Windows, Android and any other software release that comes along (not just the O/S, but the apps too) the big question for people who just want to get stuff done is always:
What will this let me do, that I couldn't do before?
Maybe new user-level functionality, old stuff that's significantly (i.e. not less than 100%) faster, with all major bugs fixed, better integrated, documented properly or downright novel stuff that nobody has thought of before. When I see a release that answers these questions, rather than just listing out: this app has been updated to version 10.4 and that utility is now version 3.66 and this other one has had a major upgrade to 0.2 THEN is the time to take note. So long as releases just come with lists of version numbers, I'll continue to assume they are intended for the geeks.