Ricoh Japan issued a notice that GR III camera orders will resume on August 21st. Orders were temporarily suspended earlier this year, and even a lottery system was implemented for the new GR III HDF and GR IIIx HDF models:
Ricoh announced a temporary suspension of GR camera orders because of another supply shortage
A quick look at Adorama, Amazon, and B&H Photo shows that ALL Ricoh GR III camera models are currently out of stock.
Full text of the notice: