As we know Apple had introduced the beta version of Messages before the launch of OS X Mountain Lion. This service had replaced iChat application. It allows Mac users to transfer conversation from one Mac to another Mac wirelessly. If you are a user of Messages beta, then you will not be happy to know that this service will be unavailable after December 14th. Apple will end Messages beta for OS X Lion on December 14th. According to Apple, Mac users should upgrade their device to OS X Mountain Lion in order to use the Messages service.
According to some Mac users, they have started receiving email from Apple about the ending of Messages beta service on December 14th. If you have received this email, then you should upgrade your Mac to OS X Mountain Lion to use the full version of Messages service. You should note that Apple had launched the Messages app in the final version of OS X Mountain Lion. Apple had unveiled OS X Mountain Lion on 11th of June at WWDC. It comes with several exciting features such as System wide sharing, Facebook integration, Notification Center, Game Center, Dictation, iCloud, new Messages app, AirPlay mirroring, new Safari, Power Nap and Gatekeeper. System wide sharing feature allows Mac users to share anything from their Mac instantly.
You have to pay only $19.99 to purchase OS X Mountain Lion from the Mac App Store. If you want to install it on your device, then your Mac must have 8GB space and 2GB RAM. All Mac models are not compatible with OS X Mountain Lion. You can install it on MacBook Air (Late 2008 or newer), MacBook Pro (Mid/Late 2007 or newer), MacBook (Late 2008 Aluminum, or Early 2009 or newer), Mac Pro (Early 2008 or newer), Mac mini (Early 2009 or newer), Xserve (Early 2009) and iMac (Mid 2007 or newer). OS X Mountain Lion requires OS X 10.6.8 or higher.