I've been using an Android alarm clock program that is unfortunately called Alarm Clock Xtreme for nearly a decade. It works pretty great. It's not quite as slick as the N9 alarm clock that blog post describes, but it's pretty close. If you're still trying to hunt down an alarm clock, give it a shot.
I'm quite a big fan of it ACX myself and use it as my daily alarm clock. However, my one gripe with it is that with the major update (ages ago now), they removed the option to set an alarm with no snooze option.
What are you looking to be updated in your alarm clock? Personally, I find updates to simple Android applications that don't seem to need new features somewhat worrying. It often seems to be coupled with a new requirement for network access...
There are a few things I've missed (multiple timezone support, bugs when waking up from lockscreen in some cases), so overall it's mostly 'keeping up' - mobile apps that don't co-evolve with the latest versions of the OS's will stop working at some point.
