Apple just announced that Siri Dictation will be implemented systemwide in OS X Mountain Lion. The feature will be integrated across the OS, “even in apps like Microsoft Word.” A small dialog box with the Siri mic appears when you want to dictate.
“Now in Mountain Lion you can share right from the app where you’re working. There’s a share button on the toolbar.” Like iOS, you can share files and media with social networks like Twitter and Flickr, or send something directly to AirDrop. Want to send a tweet? Do it directly in the OS. Facebook integration will also be present in Mountain Lion.
Open browser tabs will be synced with iCloud across devices, and there’s a “Do Not Disturb” option for Notification Center.