On a continuous basis, new devices from ABB and third party manufacturers are tested and certified for Freelance. The Device Integration Center is a service to manage and enhance these libraries.
Which fieldbus is best?
The right answer is that it depends on the application and what’s already installed. An optimized solution will probably use more than one fieldbus. For example, new 'analog' installations benefit greatly from FOUNDATION Fieldbus or HART, while new 'discrete' installations can benefit from PROFIBUS and Ethernet/IP. It's your choice!