Current version is missing few new Sony lenses, how do I go about to fix distortions manually? Also, will current lens profile roster be updated in the next update? 
which lenses are you missing?
Sony 24mm f/1.4 and Tamron FE 28-75mm f/2.8
Edit: Darktable is also missing these
I don’t see profiles for those in Lensfun.
If you’d like them to be supported, please consider submitting calibration photos to the project at Calibration images upload
RawTherapee supports LCP files, which you can generally obtain from Adobe DNG converter.