- Messages - new version of iChat with iMessage support.

- Reminders - create lists and tasks, synced via iCloud.

- Notes - create notes, synced via iCloud.

- Notification Center - on screen pop-up notifications.

- Share Sheets - share buttons to email, tweet, message, etc...

- Game Center - social gaming center for Mac.

- AirPlay Mirroring - broadcast your Mac's screen to your Apple TV

Apple releases 10.7.1 Lion update - Apple has released Mac OS Lion 10.7.1, the first incremental update to the Lion operating system released late in July. Read more »

Apple's Operating System, Mac OS X, has not seen a major rework since 2006, when Mac OS X 10.5, "Leopard", was released. In 2008 "Snow Leopard", version 10.6, was released and was merely a leaner version of 10.5, dropping support for PowerPC machines. This means that Mac OS X 10.7 Lion is the first real major change in recent years. Read more »