What is the current version of CDF?
CDF V3.0 is the current version. It was released on February 10, 2005. V3.0 is backward compatible with CDF V2.7, V2.6, and V2.5, but not vice versa. The CDF 3.0 library will read a file that was created with CDF 2.5, 2.6, or 2.7 library, and save the file in the version that was originally created under (not 3.0). A file created from scratch with CDF 3.0 will be stored in the new format that is incompatible with the previous versions of the CDF library.