The Fujifilm GFX100S manual is now available on B&H Photo here in PDF Fujifilm should post it on their site soon along with a searchable HTML version of the manual. The GFX100S will start shipping on Thursday, February 25, 2021 according to Fujifilm.
Fujifilm GFX100S: B&H Photo / Amazon / Moment / Adorama
MHG-GFX S: B&H Photo / Amazon / Moment / Adorama
Fujinon GF80mm f/1.7: B&H Photo / Amazon / Moment / Adorama