GitLab's new icon theme for files

New icon theme was introduced few days ago, but now gone

Around april 20 a new icon theme was applied (which is much better than the current / old one – IMHO), so the question: why switched back to the old one? Will the new one be used again, or it was just for testing?

I’m talking about this new theme:

Thanks,
Regards,
Miki

update
2020-04-23 : icons are back