The German website Apfeltalk.de published several screenshots of Snow Leopard unveiling some news functions.
Among them, the ability included in safari to save web sites as independent web applications, or (even better?) to synchronize your address book with a Microsoft Exchange base.
Of course, this is only the beginning of the new functions packed in Snow Leopard, but one should not forget that the main goal of the future OS is not to change the GUI but rather to shape the deep layers, and prepare our favorite OS to the forthcoming evolution: heavy multicore processing and usage of GPU to boost non graphical computing tasks.
[translation by Linathael]