German site Apfeltalk has posted some screen shots of the upcoming Mac OS 10.6 a.k.a. "Snow Leopard." Since the new version of the OS contains mostly under-the-hood features, there isn't a bunch to see though. One cool thing is Safari 4.0's "Save as Web Application" feature which creates a double-clickable run-time application from any Web page – almost like iPhone's "Save to home screen" feature. Also visible in the shots are Javascipt benchmarks and Exchange integration in Address Book.
Update: The shots appear to have been removed. OrchardSpy has posted some additional screen shots. Googling easily finds mirrors too.