Just checked on Slicer 4.10.1
When uninstall and install the extension. The files are still the ones from last year. e.g. CochleaSeg.py is from 8/12/2018.
SlicerCochlea and SlicerCervicalSpine extensions are not updated in the extension manager in WIndows
Update: the problem is solved by using Slicer 4.10.2 and the recent nightly-build.