When I log in after the upgrade to 4.9.2, I see a plain brushed metal theme. The symbols which used to appear one after the other no longer appear. The session loads anyway.
EDIT: I no longer have an activity named "Desktop icons." The splash screen is named 'Horos' in Desktop settings and the preview there looks completely different to what I see.
EDIT: When I test the Horos theme it appears without icons.