Check its new features in the changelog or get it on GitHub.

Changelog

• Added new notifications and re-factored some old device specification
• Removed StateChangeNotifications from the core library
• Amended drivers accordingly
• Upgraded the semantic library to the latest Pellet version.
• Fixed some minor issue on get/unget of OSGi services
• Updated / Integrated new features in the Environment API
• Amended several minor issues
• Started development of drivers for the Philips Hue family of devices