The software is in java and I want it to be fully cross-platform so using external libs is not an option.
The unrar code is c, porting this code to something compatible with the compression interface of java would take a lot of time.
So actually cbr/rar files support is not planned.
But never say never, as i said if i'll find a small and compatible java lib maybe i'll add the support to the planned features.
But till now there is a lot of features needed beore cbz support

(like page splitting

)
We'll see