Short answer no. Glowicons/NewIcons are not supported in MorphOS. They can be viewed in Ambient for legacy purposes but nothing more. MorphOS icons are PNG and so can be edited in any graphics package.
Long answer, 3.5/3.9 IconEdit works if you use one of the old patches to get ReAction to work on MorphOS.
Thank you for your answer, I need make icons with AOS 4 style for my programs.
Best bet then is to get IconEdit from 3.9, or 3.5, if you have either. Try installing these ReAction files
on MorphOS and they should run for you.
Edit: And I mean AmigaOS 3.5 or 3.9, not MorphOS 3.5 or 3.9, just to be clear...[ Edited by KennyR 20.10.2018 - 21:48 ]