Tiger, the latest version of Apple's Mac OS X operating system is out. There are lots af articles about it on the internet so I'm only going to cover a few of the things in there that make it stand out for me.

• Core Data - if your a programmer for the mac - this changes everything! Core data lets you design relational data models and it manages the complexities of maintaining those relationships for you in the object model. It's very cool. Check out the Cocoa Dev Central tutorial for an idea of what it can do for you.
• Quartz Composer this was a real suprise to me - Until I played around with it, I really couldn't see what all the fuss was about. The compositer lets create very complex graphical applications, screen savers or just stuff that looks cool, without having to be a graphics programming whiz. Check out http://www.quartzcomps.com/ for more details.
• Spotlight - It just lets you find stuff. It's very quick, works flawlessly and you'll hate it when you have to live without it (on windows).

There's lots of other stuff in there. Check it out if you have the chance. Apple probably won't release another major version of OSX for a couple of years, so grab your copy now.