Some information are starting to leak out of the WWDC about the core changes in Leopard for developers.

Ironically, it’s a Windows developer site that gives a pretty much complete overview of the developer improvements for Leopard.

According to the overview, Apple has made a lot of features available through APIs in the system. Time Machine, iCal, Mail, iChat and Core Animation, RSS to name a few… It’s what I like in Mac OS X, features are immediately available as services. That leads to a great coherency among applications.

The Xcode section of the sneak peak Leopard preview has also interesting information. One of the major one is that Objective-C 2.0 will feature garbage collection as well as an improved syntax. IMO, the lack of garbage collection was one of the last gap to be filled. it will dramatically boost the development.

Xcode 3.0 itself seems to include a lot of improved development tools to ease the debugging of your application as well as a totally revamped Interface Builder.

That’s a lot of stuff.