Viber is available for download at Android Market.
Check out the Viber for Android Beta Review
Yesterday Viber Media Inc representatives sent a notice which says that the Android beta period officially starts. In a short, users who applied for beta testing, will receive email with download link.
Here is the whole message:
As we promised throughout the past few months, we will now start sending out emails with the Beta version to those who subscribed to be beta-testers.
There order of sending of emails will be first-sign first-get, in daily groups.
We believe that within the next few days, up to a week, all those who subscribed will have received the email with the instructions and the download link.
After installing Viber on Android, we ask our testers to report bugs (or suggestions) to this link: http://blog.viber.com/viber-beta-support
Users who didn’t subscribe in time can still do it in this link: http://eepurl.com/bW1Ln
We wish you and your readers fun use of Viber-for-Android 
Viber for Android Beta - blog.tmcnet.com
