Apple has emailed users of its Messages Beta Program, notifying them that the program will end on the 14th of December this year. The program was launched a few months before the debut of Mountain Lion, in February this year, and allowed Lion users to get a taste of what they could expect from the finished version of OS X 10.8 Mountain Lion.
After almost a year, Apple has sent an email to those still using the Beta:
The Messages Beta program for Lion will end on Friday, December 14, 2012. We hope you’ve enjoyed the opportunity to preview Messages. If you’d like to continue using Messages, upgrade to OS X Mountain Lion from the Mac App Store. Messages is one of many great new apps and features built right into OS X Mountain Lion. Learn More. Thank you for your participation in the Messages Beta program.
In Mountain Lion, Messages is included in the download of the OS and is integrated with the rest of OS X, with sharing options in most apps and Notification Center support. It replaces iChat as the primary messaging system for Mac. Those wishing to continue using Messages will have to upgrade to Mountain Lion as advised by Apple.