This post is from Gail Johnson:
From the OS X Lion Apple website:Built-in voices
VoiceOver in OS X Lion includes built-in voices that speak 22 languages: Arabic, English, Czech, Danish, Dutch, Finnish, French, German, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese (Portugal), Portuguese (Brazilian), Russian, Spanish (Spain), Swedish, Turkish, Cantonese, Mandarin (China), and Mandarin (Taiwan). In addition, other languages are available for downloads including Greek, Hindi, Indonesian, Romanian, Slovak, and Thai, as well as alternative voices with different dialects such as English (UK), English (Australia), English (South Africa), and Spanish (Mexico).
High-quality voices
In addition to the built-in voices in Lion, you can download higher-quality versions of the languages from VoiceOver Utility. Choose Customize from the Voice pop-up menu in the Speech pane.
Set up your Mac in your language
Lion supports 22 different languages in VoiceOver, so you can set up your Mac in almost any language.
Picture-in-picture zoom
The screen zoom feature in Lion offers a picture-in-picture view, allowing you to see the zoomed area in a separate window while keeping the rest of the screen at its native size. Choose to have the window follow the cursor, or keep the window in one place to show only areas you navigate.
International braille tables
Lion includes built-in support for more than 80 new braille tables serving a wide range of languages.
Braille verbosity settings
You can now specify the default verbosity level (amount of information you want to receive) for use with a refreshable braille display. And you can set verbosity levels for specific controls, such as applications, checkboxes, and Dock items, as well as headings, images, and links.
High-resolution cursor
In Lion, the cursor is crisp and sharp at larger sizes.
Improved drag and drop
VoiceOver in Lion offers an improved drag-and-drop experience for users who are blind or have difficulty seeing. Simply mark the item you want to drag, then mark the destination — OS X moves it into place.
VoiceOver activities
With VoiceOver activities, you can create groups of preferences for specific uses. For example, you can create an activity to use a certain voice and faster speaking rate when you’re shopping online catalogs. Create a second activity to use a different voice and slower speaking rate when you’re reading online newspapers. You can switch activities manually or have VoiceOver switch automatically based on the applications you use.
Single-letter quick navigation in web pages
Assign VoiceOver commands to single keys to make it even easier to browse the web using VoiceOver.
Search in VoiceOver Utility
VoiceOver Utility includes a search field to help you find the feature you’re looking for.
For those with the Mac Air and the Mac Mini
For AllMac owners
http://www.apple.com/macosx/whats-new/features.html
Posted by lvatug 
