下午的 WWDC 主题是下一代的 Mac OS X 10.6 操作系统 Snow Leopard "雪豹"，之前这边也提到过有关的信息，WWDC 上一一被证实。雪豹最主要的重心在于性能和稳定性的提高上，和针对多核心处理器的优化。其中，引入了一项名为"Grand Central"的新技术，简化开发者为多核心处理器进行编程的过程。更新的部分还将会提供开发者一些信息的构架，比如新的媒体平台 QuickTime X 和 OpenCL，通过 OpenCL 可以支持 GPU 通用计算加速。



雪豹也将是一款完整的 64 位操作系统，最大能支持 16TB 内存，原生支持微软 Exchange 2007 企业服务等。根据官方的资料，服务器版本还有一些其他的特性：

Snow Leopard Server information

• iCal Server 2: Adds group and shared calendars as well as a way to invite non-iCal Server users to meetings and events. Also includes a web app to let people access their calendars on the go.
• Podcast Producer 2: This little known Apple app makes creating content and getting it into the iTunes Store a snap. This version looks like it adds a number of great features including support for recording both the presenter and the presentation they are giving and a way to locally host your podcasts.
• Address Book Server: This new component lets you share contacts across machines, as well as create a central Address Book without having to have an LDAP server.
• ZFS: The long rumored addition of Sun's file-system is finally coming to OS X Server. Snow Leopard will be able to both read and write to ZFS volumes.



目前，仅有一部分开发者获得雪豹的早期测试版本，版本号 10A96，其他更为详细的信息可以参看官方网站的介绍。