New attributes have been added by GC HQ as of yesterday Aug 31 (Release Note).
The count towards badges is already included, but it will take some time to properly update:
PGC will need some time to catch all new attributes and COs have to manually set them for their caches. Except for GC solution checker, which will be added automatically via script, and Challenges, which should be assisted via script.
The count will not further drop but rise again as PGC catches up with the attributes. Please give it some time though.
There will be a fifth new attribute, Diamond will then rise by 1 to 108. Timeline is still unknown, though.