On 17 April Canonical released the latest version of Ubuntu, v14.04, or "Trusty Tahr" if you prefer names. On April 17 I installed the update on my desktop workstation.
The desktop update took a while only because I wasn't sitting at the keyboard to catch the prompts right away (having a 3-year old really impacts hobby time), and it replaced the few things I did to integrate two-factor authentication to my SSH password-based logins (I use key-based logins normally, but for the cases where someone tries to log in...bam! they need a code from my phone!), which were pretty easy to replace (I should blog about that, but http://www.howtogeek.com/121650/how-to-secure-ssh-with-google-authenticators-two-factor-authentication/ has the few steps it takes).
So far the most keen change I've seen is in the window resizing; the contents of the window are changed in realtime, instead of simply rubber-banding the frame and replacing the contents when the frame is released. This is something I expect on my Mac, but have put up with on my Linux boxes long enough that I guess I didn't even think about it.
The only other change I can honestly say I've noticed is the lock screen isn't just a dialog hovering over the background, but more like the original login screen, with the name and password box stylistically integrated.
The server, however, is still running 13.10. It nags me when I log into it:
New release '14.04' available.
Run 'do-release-upgrade' to upgrade to it.
I'd like to keep the server up to date, even though I know the updates for 13.10 will continue for some time to come, but I fear the troubles I seem to have with my sendmail server will likely occur again. Small potatoes, since I've documented it here and there several times (generally rebuild sendmail and/or the configuration after the OS update), but with the aforementioned lack of keyboard interaction, it's tougher than it should be.
It'll happen soon enough, but until then I guess I'll have to put up with the nagging.