I am most excited about:

• The finder updates including Quick Look
• Stacks
• iCal Updates
• Mail Updates – Maybe I will use it as more than an archiver for Gmail
• Time Machine

For all those Mac users out there, what features are you most excited about and will you upgrade right away or wait for the 10.5.1 updates? I am still undecided.

Check out Apple’s list of the more than 300 new features.