This took longer than we would have liked to say, but there were communication issues on multiple fronts.
- The Font Awesome font is licensed under the SIL Open Font License – http://scripts.sil.org/OFL.
- Font Awesome CSS, LESS, and SASS files are licensed under the MIT License – http://opensource.org/licenses/mit-license.html.
- The Font Awesome pictograms are licensed under the CC BY 3.0 License – http://creativecommons.org/licenses/by/3.0/
- Attribution is no longer required in Font Awesome 3.0, but much appreciated: Font Awesome by Dave Gandy – http://fortawesome.github.com/Font-Awesome.
As far as crediting is concerned, we feel attribution is always good. You should always put that in your source code, but your readme is optional. Credit links must be opt-in if they show on the front facing part of your site (this includes the login page), but that’s nothing new.
So with that said, we’re going through the plugins that had been closed for Font Awesome usage and opening them. If we missed yours, please email us at plugins at wordpress.org, with a link to the plugin (like https://wordpress.org/extend/plugins/font-awesome/ which is open) and we’ll check right away.