"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
Snow Leopard Build 10A286 Seeded to Developers
The new QuickTime Player has a new minimal UI and is focused on playback.
Finder includes a new Cocoa Desktop, Info Window and Contextual Menu
Safari 4 beta is included in the seed as the default browser.
Snow Leopard is due for release sometime in 2009, and Apple has been making steady progress on the new operating system, as demonstrated by consistent releases of new builds to developers. Apple has said that they are focusing on quality and performance in Snow Leopard rather than introducing significant numbers of new features.