Keywords

Hi there!
I love FastRawViewer for culling fast through my Catalog without a compromise for speed.
I read in the Forum at about the year 2014 that you are planning to implement further features
like the ability to add keywords in a smiliar fast and forward way. 
So my question is if this is planned or if there will be an update with the functionality
to add Keywords in a fast manner?
If not, could you suggest another Software that is in a similiar manner straight forward like yours?
Many greetings and keep up the good work!
Manuel