Apple has released a new Safari Beta. The update includes minor performance improvements, and other minor tweaks, and does not include any major new features. From Appleis Safari page:
Whatis New Safari Update 2-12-03 improves compatibility with popular web sites, displays web pages and Flash content more quickly, adds XML support, increases standards conformance and improves stability. The update also works with self-signed security certificates.
You can find the download at Appleis Safari Web site.