Feature requests and feature suggestions are basically future suggested features that users can suggest, and/or future features iThemes may consider adding to the future versions of the plugin(s) in question (again, thanks for suggesting new features!).
There is no guaranteed ETA on when such feature requests will be implemented, unless otherwise noted. All suggested features are just that: suggestions. They remain suggestions until they're confirmed as officially in the works and to be included. Even then, unless a feature is actually rolled out publicly, there is no guarantee any feature suggestion will be implemented. We do our best to try and accommodate as many feature suggestions as possible.
Also, there is no guarantee that any feature request suggested will be implemented, unless otherwise noted.