GD WebFonts Toolbox Pro 2.0 is development, and it should be released in the next 2 weeks. New version will bring support for integration with TypeKit through TypeKit API. Default Google Web Fonts list will be updated (close to 700 fonts right now).
Support for TypeKit will rely on TypeKit API, so you will need the API token from your TypeKit account. Integration will work with both free and paid TypeKit accounts. Plugin will be able to load all the kits you have created and published on TypeKit, and it will allow you to select with kits you want to use on your website, and plugin will load it for you. You will be able to preview fonts loaded through all the kits you enable. Right now, all this is under development, and integration into other areas is still in the works.
Google Web Fonts default list will contain latest updates (March 3 2015) with 696 fonts available. There will be many admin side improvements, few more CSS properties for the rules editor, tool to clear all cached data and several fixes related to generated CSS.
Let me know if you have more suggestions about this release (I can’t promise that it will be implemented, maybe it will be pushed for next release), or you have found some bugs that should be fixed in this version. Roadmap will be updated soon.