The current answer is that we don’t have any specific plans for this.
There’s been some discussion about making category icons a first class feature, though - I know this is something that @tobiaseigen is interested in, for example. But it’s not currently on our list of priorities.
In the meantime, I’m not sure what it’d take to work around this or to add support for it in the category icons theme component. @pmusaraj do you have any thoughts on what might be entailed to do that?
@craigconstantine - what would you expect the sidebar to look like when icons are used? would you expect the icons to have the category color in this scenario?